❶ 初中英语比较级
绝大多数形容词有三种形式,原级,比较级和最高级, 以表示形容词说明的性质在程度上的不同。
形容词的原级: 形容词的原级形式就是词典中出现的形容词的原形。 例如: poor tall great glad bad
形容词的比较级和最高级: 形容词的比较级和最高级形式是在形容词的原级形式的基础上变化的。分为规则变化和不规则变化。
规则变化如下:
1) 单音节形容词的比较级和最高级形式是在词尾加 -er 和 -est 构成。
great (原级) (比较级) (最高级)
2) 以 -e 结尾的单音节形容词的比较级和最高级是在词尾加 -r 和 -st 构成。
wide (原级) (比较级) (最高级)
3)少数以-y, -er, -ow, -ble结尾的双音节形容词的比较级和最高级是在词尾加 -er 和 -est 构成。
clever(原级) (比较级) (最高级)
4) 以 -y 结尾,但 -y 前是辅音字母的形容词的比较级和最高级是把 -y 去掉,加上 -ier 和-est 构成.
happy (原形) (比较级) (最高级)
5) 以一个辅音字母结尾其前面的元音字母发短元音的形容词的比较级和最高级是双写该辅音字母然后再加 -er和-est。
big (原级) (比较级) (最高级)
6) 双音节和多音节形容词的比较级和最高级需用more 和 most 加在形容词前面来构成。
beautiful (原级)? (比较级) (比较级)
difficult (原级) (最高级) (最高级)
常用的不规则变化的形容词的比较级和最高级:
原级------比较级------最高级
good------better------best
many------more------most
much------more------most
bad------worse------worst
far------farther, further------farthest, furthest
形容词前如加 less 和 least 则表示"较不"和"最不
形容词比较级的用法:
形容词的比较级用于两个人或事物的比较,其结构形式如下:
主语+谓语(系动词)+ 形容词比较级+than+ 对比成分。 也就是, 含有形容词比较级的主句+than+从句。注意从句常常省去意义上和主句相同的部分, 而只剩下对比的成分。
形容词最高级的用法:
形容词最高级用于两个以上的人和物进行比较, 其结构形式为:
主语+谓语(系动词)+the+形容词最高级+名词+表示范围的短语或从句
❷ 初中英语 比较级 语法
不可以代替上文的复数名词需要用those.
❸ 初二英语有哪些主要语法
过去式，双宾语，现在完成进行时，现在完成时，将来时，宾语从句，过去式，祈使句，
❹ 八年级上英语语法：比较级
[英文] 比较级：comparative degree
[解释]在英语中通常用下列方式表示的词:在形容词或副词前加(如 more natural,more clearly ),或加后缀 -er(newer,sooner )。典型的是指形容词或副词所表示的质、量或关系的增加
A. “比较级+ and +比较级”或“more and more +原级”表示“越来越……”.
It is getting cooler and cooler.
天气越来越凉爽。
The wind became more and more heavily.
风变得越来越大。
B. “the +比较级……, the+比较级”，表示“越……越……”。
The more money you make, the more you spend.
钱你赚得越多，花得越多。
The sooner，the better. 越快越好。
C. 表示倍数的比较级用法：
a. A is …times the size /height/length/width of B.
The new building is three times the height of the old one.
这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高)
b. A is …times as big /high/long/wide/large as B.
Asia is four times as large as Europe.
亚洲是欧洲的四倍大。(亚洲比欧洲大三倍)
c. A is …times larger /higher/longer/wider than B.
Our school is twice bigger than yours.
我们学校比你们学校大两倍。
大多数形容词（性质形容词）和副词有比较级和最高级的变化，即原级、比较级和最高级，用来表示事物的等级差别。原级即形容词的原形，比较级和最高级有规则变化和不规则变化两种。
1) 规则变化
单音节词和少数双音节词，加词尾-er，-est来构成比较级和最高级。
构成法 原级 比较级 最高级
一般单音节词 tall(高的) taller tallest
末尾加-er,-est great(巨大的) greater greatest
以不发音的e结尾和以- le结尾的双音节词只加-r,-st
nice(好的) nicer nicest ，able（有能力的) abler ablest
以一个辅音字母结尾的闭音节单音节词，双写结尾的辅音字母，再加-er，-est
big(大的) bigger biggest
hot热的) hotter hottest
"以辅音字母+y"结尾的双音节词改y为i，再加
-er，-est easy(容易的)
easier easiest ，busy(忙的) busier busiest
少数以-er，-ow结尾的双音节词末尾加-er，-est
clever(聪明的) cleverer cleverest
narrow(窄的) narrower narrowest
其他双音节词和 important(重要的)
多音节词，在前 more important
面加more，most most important
来构成比较级和 easily(容易地)
最高级。 more easily
most easily
2) 不规则变化
原级 比较级 最高级
good(好的)/ better best
well(健康的)
bad (坏的)/ worse worst
ill(有病的)
old (老的) older/elder oldest/eldest
much/many(多的) more most
little(少的) less least
far (远的) farther/further farthest/furthest
比较级形容词或副词 + than
You are taller than I am./ You are taller than me.
The lights in your room are as bright as those in mine.
注意：
1）要避免重复使用比较级。
(错) He is more cleverer than his brother.
(对) He is more clever than his brother.
(对) He is cleverer than his brother.
2）要避免将主语含在比较对象中。
(错) China is larger that any country in Asia.
(对) China is larger than any other country in Asia.
3）要注意对应句型，遵循前后一致的原则。
The population of Shanghai is larger than that of Beijing.
It is easier to make a plan than to carry it out.
4）要注意冠词的使用，后有名词的时候，前面才有可能有名词。
比较：Which is larger, Canada or Australia?
Which is the larger country, Canada or Australia?
She is taller than her two sisters.
She is the taller of the two sisters.
可修饰比较级的词
1）a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even等
2）还可以用表示倍数的词或度量名词作修饰语。
3）以上词(除by far)外，必须置于比较级形容词或副词的前面。
典型例题:
1） ---- Are you feeling ____?
---- Yes，I'm fine now.
A. any well B. any better C. quite good
D. quite better
答案：B. any 可修饰比较级，quite修饰原级，well的比较级为better.
2）The experiment was____ easier than we had expected.
A. more B. much more C. much
D. more much
答案：C. much可修饰比较级，因此B，C都说得通，但easier本身已是比较级，不需more，因此C为正确答案。
3）If there were no examinations, we should have ___ at school.
A. the happiest time B. a more happier time
C. much happiest time D. a much happier time
答案：D。
比较级和最高级一般都要一起讲吧
the + 最高级 + 比较范围
1) The Sahara is the biggest desert in the world.
形容词最高级前通常必须用定冠词 the，副词最高级前可不用。
形容词most前面没有the，不表示最高级的含义，只表示"非常"。
It is a most important problem.
=It is a very important problem.
注意： 使用最高级要注意将主语包括在比较范围内。
(错) Tom is the tallest of his three brothers.
(对) Tom is the tallest of the three brothers.
2) 下列词可修饰最高级，by far, far, much, mostly, almost
This hat is nearly / almost the biggest.
注意：
a. very可修饰最高级，但位置与much不同。
This is the very best.
This is much the best.
b. 序数词通常只修饰最高级。
Africa is the second largest continent.
3) 句型转换：
Mike is the most intelligent in his class.
Mike is more intelligent than any other student in his class.
4) "否定词语+比较级"，"否定词语+ so… as"结构表示最高级含义。
Nothing is so easy as this.
=Nothing is easier than this.
=This is the easiest thing.
英语形容词的比较级、最高级用法解析：）~~
一：单音节或部分双音节的词的比较级最高级的变法:
1.一般情况下直接加er或est.
如:short→shorter→shortest
2.以字母e结尾的形容词和副词加r或st
如:nice→nicer→nicest
3.以辅音字母y结尾的Y改为I加er,est
如:happy→happier→happiest
4.重读闭音节结尾的双写结尾辅音字母加er或est
如:fat→fatter→fattest
5.特殊形式
good/well→better→best
many/much→more→most
ill/bad(badly)→worse→worst
little→less→least
old(eld)→older→oldest(elder/eldest)
far→farther→farthest(further/furthest)
多音节的形容词和副词的比较级.最高级.:比较级在形容词.副词前面加more,最高级在形容词.副词前面加most.
如:beautiful→more beautiful→most beautiful
(而且在句子中,形容词最高级前必须加the.)
二：形容词加ly变成的副词的比较级和最高级用more或most.
如:showly,happily
由动词的过去分词形式的形容词:用more或most表示比较级和最高级.
如:tired→more tired→most tired
语法-轻松英语-洪恩在线,这里面有分类的详细介绍，可以看看：）~~
http://www.hongen.com/eng/pub/yufac/
英语语法专区，各个语法点：）~
形容词、副词的比较级和最高级
一般来说，中文意思是“……的”的词是形容词，而中文意思是“……地”的词是副词。
一、形容词概念
形容是用来修饰物体的形状，大小，长度，属性，特点等，位于名词的前面。
如：
1．He is a hard-working student.(努力的→特点)
2．Our English teacher has long hair.（长的→长度）
3．The elephants are very big, and the mice are very small.（大的、小的→大小）
二、形容词、副词比较级和最高级的意义
英语中的形容词和副词，在句子里表示“比较……”、“最……”时，要用特别的形式，即：比较级和最高级。原来的形式称为原级。
如： long longer longest
原级 比较级 最高级
1．The black pen is very long. 黑色的钢笔很长。
2．The blue pen is longer than the black one. 蓝色的钢笔比黑色的长。
3．The red pen is the longest of the three. 红色的钢笔是三支中最长的。
三、形容词、副词比较级的用法
表示两者间的比较用比较级。其常见句式有：
1．“A + be +形容词比较级 + than + B” 意思为“A比B更……”。
如：This tree is taller than that one. 这棵树比那棵树高。
注意：
① 在含有连词than的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较。
②在比较级前面使用much，表示程度程度“强得多”。
如：A watermelon is much bigger than an apple.
③ very, quite一般只能修饰原级，不能修饰比较级。
2．“become + 形容词比较级 + and + 形容词比较级”是“变得越来越……”的意思，and连接同一个形容词的比较级。
如：It becomes warmer and warmer when spring comes. 春天来了，天气变得越来越暖和了。
注：表示“越来越……”时，若比较级是“原级 + er”构成的，则常用“比较级 + and + 比较级”形式；若比较级是“more + 原级”构成的，需用“more and more + 原级形式”。
如：Our school is becoming more and more beautiful. 我们的学校变得越来越美丽。
3．在含有or的选择疑问句中，如果有两者供选择，前面的形容词要用比较级形式。
如：Who is taller,Tim or Tom? 谁更高，Tim还是Tom?
四、形容词、副词的最高级的用法
形容词、副词的最高级形式主要用来表示三者或三者以上人或事物的比较，表示“最……”的意思。句子中有表示范围的词或短语。如：of the three, in our class等等。
如：
He is the tallest in our class. 他在我们班里是最高的。
五、注意
形容词最高级前一定要有定冠词the，而副词最高级前则不需要。
六、形容词、副词的比较级和最高级的构成规则
1．一般情况下，比较级在后面加-er，最高级在后面加-est；
如：small→smaller→smallest short→shorter→shortest
2．在重读闭音节（即：辅音＋元音＋辅音）中，先双写末尾的辅音字母，比较级加-er，最高级加-est；
如：big→bigger→biggest hot→hotter→hottest
3．以不发音e结尾的单音节词，比较在原级后加-r，最高级在原级后加-st；
如：large→larger→largest nice→nicer→nicest
4．以“辅音字母＋y”结尾的双音节词， 把y改为i，比较级加-er，最高级加-est；
如：easy→easier→easiest heavy→heavier→heaviest
5．多数多音节词，比较级在前面加more，最高级在前面加most；
如：beautiful→more beautiful→most beautiful
different→more different→most different
6．有少数形容词、副词的比较级和最高级是不规则的，必须熟记。
如：good→better→best bad→worse→worst old→elder→eldest
many/much→more→most little→less→least
far →further/farther→ furthest/farthesr
祝你学习进步，更上一层楼！请记得采纳，谢谢！(*^__^*)
❺ 英语比较级语法
1
不能无视than
，than就是用比较级的
2
这里把he和any
other
boy
分成相互对比的两部分，any
other
boy
不能看成是个体，要看成一个整体
❻ 初二英语语法有什么
中考重点句型
一、常使用动词不定式的短语
1、It’s time to do sth.\ It’s time for sth
该作某事的时候了.
2、can’t wait to do sth. 迫不及待要作某事
3、ask /telle sb. (not ) to do sth.
要求/告诉某人(不)作某事
4、allow sb. to do sth. 允许某人作某事
5、be supposed to do sth. 应该作某事
6、Would like /want (sb.) to do sth. 想要作某事
7、have sth/nothing to do 有…时要做/与…无关
8、find it +adj. to do sth. 发觉作某事…
9、prefer to do sth. rather than do sth.
宁愿作某事,而不愿作某事
10、It’s +adj. for sb. to do sth.
作某事对某人来说…
11、It’s better /best to do sth. 最好做某事
12、It takes sb. sometime. to do sth.
某人做某事用了一些时间
二、常用动名词的短语
1、 enjoy /like /love doing sth. 喜欢做某事
2、 keep /keep on /carry on / go on doing sth.
继续做某事
3、feel like doing sth. 想要做某事
4、practise doing sth. 练习作某事
5、give up doing sth. 放弃作某事
6、be good at= do well in\on doing sth. 擅长作某事
7、pay attention to doing sth. 注意作某事
8、what about/ how about doing sth.
….怎么样(好吗)?
9、Thank you for doing sth. 为…感谢某人
10、mind doing sth. 介意作某事
11、be used for doing sth./ be used to do sth. 、
被用来作某事
12、spend …(in) doing sth. 花时间作某时
13、be busy doing/ with sth. 忙于作某事
14、finish doing sth. 作完某时
15、look forward to doing. 盼望做某事
16、prefer doing sth. to doing sth. 喜欢…胜过…
17、be/get used to doing sth. 习惯作某事
18、keep / stop/ prevent sb. from doing sth.
阻止某人作某事
三、省略动词不定式的短语
1、一看二听三使役
see/ hear/ feel/ notice/ look at /listen to sb. do sth.
看见/听见/感觉/注意某人作某事
make /let /have sb. do sth. 使/让某人做某事
2、help sb. (to) do sth/ with sth.帮助某人作某事
3、 had better (not) do sth. 最好(不)做某事
4、 Why don’t you/ not do sth.为什么不作某事
5、Would /Will / Could you please (not) do sth.
请你(不)作某事好吗?
四、 同义词比较
1、 stop to do sth. 停下正在做的事去作另一件事
stop doing sth. 停止正在作的事
eg. When the teacher came into the classroom, the students stopped talking. After he worked for an hour, he stopped to have a rest.
2、 forget / remember to do sth.
忘记/记得要去作某事
forget / remember doing sth.
忘记记得曾经做过某事
eg. Please remember to bring my book to school.
I remember doing my homework
3、 used to do sth. 过去常常作某事
be used to do sth. 被用来作某事
be used to doing sth. 习惯于作某事
eg. My father used to smoke.
Wood is used to make paper.
I am used to getting up early.
4、So +be/助动词/情态动词 + 主语
…也一样
So +主语+be/助动词/ 情态动词
是呀,表示赞同别人的观点
Neither + be /助动词/ 情态动词+主语
…也不一样（用于否定句）
eg. He has been to Beijing. So have I.
It’s a fine day. So it is.
She doesn’t like eggs. Neither do I.
5、 too…to do sth. 太…而不能…
so +adj. /adv + that(从句) 如此…以致…
such +（a/an +adj.）+n.+ that(从句)
如此…以致…
(not) enough (for sb.) to do sth.
(对某人来说)做某事(不)够
eg. The boy is too young to go to school.
The boy is so young that he can’t go to school.
He is such a young boy that he can’t go to school.
The boy is not old enough to go to school.
五、常考知识点
1、keep +adj. 保持…状态
keep (sb.) doing sth.
继续做某事/使某人老是做某事
eg. Everyone should keep our classroom clean.
It’s too late, but he still keeps working.
Lily always keeps us waiting for her.
2、make+ sb. + n. 使某人成为
make + sb. + adj. 使某人…
make sb. do sth. 使某人做某事
Sb. be made to sth. 某人被迫做某事
eg. We made Peter our monitor.
Books make us happy.
He often makes me laugh.
The workers were made to work 12 hours a day.
3、I don’t think that 我认为…不
eg. I don’t think you are right.
4、It’s /was/has been+ some time +since+一般过去时… 自从…以来有多久了
eg. It has been two years since we met last time.
6、 What do you mean by?=What does .. mean?=what is the meaning of...?
是什么意思?
eg. What do you mean by “computer”?=What does “computer” mean?=what is the meaning of "computer"?
7、 What do you think of…/How do you like …?
你认为…怎么样?
eg. What do you think of this film /How do you like this film?
8、 What is/was/will …be like? ..怎么样?
eg. What is the weather like?
What will the life in the future be like?
9、 It’s said/ reported that… 据说/据报道
It's well known that 众所周知
It's thought that 大家认为
eg. It’s said that the population of the word would be 6 billion in 2050.
10、one of the +形容词最高级+名词复数
…其中之一
eg. Shanghai is one of the biggest cities in China.
11、neither…nor… 既不…也不（两者都不）
either…or…要么…要么/或者…或者/不是…就是
not only…but also… 不但…而且
以上三个词做主语时,要用就近原则
eg. Neither you nor he has been to the USA.
Either he or you go to the park.
Not only my mother but also my father is a teacher.
neither of 两者都不
either of 两者选一
none of 没有一个
以上三个做主语时，谓语动词用单数
All of 全部 Both of 两者都
以上二个做主语时，谓语动词用复数
12、比较级+ than +any other +名词单数
…比其余任何一个…
比较级+ than + the other+名词复数
eg. Shanghai is bigger than any other city=shanghai is bigger than the other cities in China.
13、When（当…的时候）, if （如果）, as soon as（一…就）, until（直到…才）, unless（除非/如果…不）这几个词引导的时间或条件状语从句时,主句要用一般将来时.
从句一般现在时
eg. I will call you when he comes.
If it doesn’t rain tomorrow, we will have a picnic.
As soon as I get to Beijing, I’ll come to see you.
He won’t go to bed until his parents come back.
Unless you work hard, you won’t catch up with others.
网络截来的哟！~~~~
请采纳，拜托啦！~
❼ 初二英语语法重点是什么
. 初二语法重点： 人称代词
主格： I we you she he it they
宾格： me us you her him it them
形容词性物主代词：my our your her his its their
名词性物主代词： mine ours yours hers his its theirs
2.形容词和副词的比较级
(1) 一般在形容词或副词后+er
older taller longer stronger, etc
(2) 多音节词前+more
more interesting, etc.
(3) 双写最后一个字母，再+er
bigger fatter, etc.
(4) 把y变i，再+er
heavier, earlier
(5) 不规则变化：
well-better, much/many-more, etc.
3.可数词的复数形式
Most nouns + s a book –books
Nouns ending in a consonant +y - y+ ies a story—stories
Nouns ending in s, sh, ch or x + es a glass—glasses a watch-watches
Nouns ending in o +s or +es a piano—pianos a mango—mangoes
Nouns ending in f or fe - f or fe +ves a knife –knives a shelf-shelves
4.不可数名词(单复数形式不变)
bread, rice, water ,juice etc.
5. 缩略形式
I’m = I am you’re = you are she’s = she is he’s = he is
it’s = it is who’s =who is can’t =can not isn’t=is not etc
6. a/an
a book, a peach
an egg an hour
7. Preposition:
on, in ,in front of, between, next to, near, beside, at, behind.
表示时间： at six o’clock, at Christmas, at breakfast
on Monday on 15th July On National Day
in the evening in December in winter
8. 基数词和序数词
one – first two-second twenty-twentieth
9. Some /any
I have some toys in my bedroom.
Do you have any brothers or sisters?
10. be 动词
(1) Basic form: am/are/is
(2) 肯定和否定句 I am(not) from London.
My eyes are(not) small.
My hair is(not) long.
（3）一般疑问句： Am I a Chniese? Yes, you are. No, you aren’t.
Are they American? Yes, they are. No, they aren’t.
Is the cat fat? Yes, it is. No, it isn’t.
11. there be 结构
肯定句： There is a …
There are …
一般疑问句:Is there …? Yes, there is./ No, there isn’t.
Are there…? Yes, there are. /No, there aren’t.
否定句： There isn’t …. There aren’t….
12. 祈使句
Sit down please
Don’t sit down, please.
13. 现在进行时.通常用“now”.
形式： be + verb +ing
eg: I am(not) doing my homework.
You/We/They are(not) reading.
He/She/It is(not) eating.
动词 —ing 的形式
Most verbs +ing walk—walking
Verbs ending in e -e + ing come—coming
Short verbs ending in a vowel + a consonant run –running swim—swimming
14 一般现在时。通常用 “usually, often, every day, sometimes”。
形式：
肯定句：
I go to school on foot every day.
She goes to school on foot every day
初二下学期要接触到得语法点：1.过去进行时；
2.using adjectives;
3.直接引语改间接引语；
4.using although and though;
5.object clauses with that after know, think, believe, etc.
6.if 的从句
❽ 初中八年级英语所有语法
现在完成时
1.构成
现在完成时是由助动词 have(has)+动词的过去分词构成。助动词说明该谓语是属于现在时范围。它和主语的人称、数要保持一致。过去分词是主要的谓语动词，说明句子的意义。
2.用法
（1）表示动作发生在过去某个不确定的时间，但对现在留下了某种影响和结果。常被just, already, yet 等副词修饰。常与非延续性动词连用。 如：
-Have you had lunch yet? -Yes, I have. I've just had it. 你（已经）吃午饭了吗？ 我刚刚吃过。（现在我不饿了）
（2）表示从过去某一时刻开始一直持续到现在的动作或状态。这个动作可能刚停止，可能仍然在进行。常用延续性动词，常带有for和since（自从）等表示一段时间的状语。
如：He has taught here since 1981. 他自1981年就在这儿教书。（可能还要继续教）
I haven't seen her for four years. 我有四年没见到她了。
(3）表示说话前发生过一次或多次的动作，现在成为一种经验，一般译为汉语“过”，常带有twice, ever, never, three times等时间状语。
如： I have been to Beijing twice. 我去过北京二次。
3．结构
1）陈述句结构：主语＋have( has)（not）+过去分词＋其它。have not=haven’t has not= hasn’t.
2) 一般疑问句结构：Have( Has )＋主语＋过去分词＋其它？
3) 特殊疑问句：特殊疑问词＋have(has) +主语+ 过去分词＋其它？
e.g. He has already finished his homework.
He hasn’t finished his homework yet.
Has he finished his homework yet? --Yes, he has. / No, he hasn’t. / No, not yet.
4.现在完成时的时间状语
1）现在完成时属于现在时范围，故不能和过去的时间状语连用。如: yesterday, last Sunday, in1990, three years ago等。但是，在强调动作产生的后果和影响时，可以和一些表示不确定的时间状语连用。
a. 用副词already和yet。already一般用于肯定句中，yet一般用于否定句和 疑问句中。如：We have already finished our homework.我们已完成作业了。
They haven't finished their homework yet.他们还没有完成作业。
b. 用ever 和never。多用于否定或疑问句中，表示“曾经”或“从未“等。 如：-Have you ever been to the Great Wall?你曾经去过长城吗？
-I have never been to the Great Wall.我从未去过长城。 c. 用表示到说话为止的过去时间状语，如just（刚刚）, before（以前）, up to now（直到现在）/ until now, in the past (few years/ three days 等), so far (迄今为止) recently 等。 例如：I have seen her before, but I can not remember where. 我以前见过她，但记不起在哪里见过。
He has been there three times the last few days. 近几年他去过那里三次了。 d.用包括“现在”在内的时间状语，如：today, this morning (month ,year, term等.例如：-Have you met him today? - No, I haven't. 今天你见过他吗？我没有。
How many times have you been there this year? 今年你去过那里多少次？
2） 现在完成时可以和带有since或for等表示“一段时间”的状语连用,表示动作或状态从某一时刻开始，一直持续到现在。如：I haven't seen him for two years. 但是，像come, arrive, buy等终止性动词不能与表示“一段时间”的状语连用。要用，必须改为“be（在）”等延续性动词来表述。现归纳总结一下由非延续性动词到延续性动词的转换：
arrive → be here begin (start) → be on die →be dead come back → be back leave → be away fall ill (sick, asleep) → be ill (sick, asleep) go out →be out finish →be over put on →wear 或be on get up →be up join →be in / be a member of… open → be open close →be closed go to school→ be a student borrow →keep buy →have catch(a cold)→ have(a cold) get to know →know begin to study → study come to work→ work
如：He has been a soldier for three years.他参军三年了。或He has been in the army for there years. 不可以说He has joined the army for there years.
His father has been dead for two years.他父亲去世二年了。（不可以说has died）
The film has been on for ten minutes.电影已开始十分钟了。（不可以说has begun）
We have studied English for three years. （不可以说have begun） 我们（开始）学英语已三年了。
5. 现在完成时和一般过去时的区别
现在完成时和一般过去时都表示在过去完成的动作。但现在完成时强调的是这一动作与现在的关系。如对现在产生的结果或影响等，而一般过去时只表示动作在过去某一时刻发生，不表示和现在的关系。试比较：
I have lost my new book. 我把新书丢了。（现在还未找到）
I lost my new book yesterday. 我昨天把新书丢了。（昨天丢的，现在找到与否没说明）
6.几点注意事项 （1）have been(to)与have gone( to)的区别：have been(to) 表示“去过某地（现在已经回来了）”，可用于各人称；have gone(to) 表示“去某地了（说话时某人不在当地）”，常用于第 三人称，前者可与once ,never, several times等连用，后者则不能。如：They have been to Beijing twice.他们去过北京两次。 He has gone to Beijing . 他去北京了。 （2）“It is或has been + 一段时间+ since引导的时间状语从句”表示“某人干某事已经多长时间了”。since从句的谓语要用非延续性动词 若动词延续，则译成相反的意思。如：It is two years since his father died. =His father has been dead for two years.他父亲去世已有三年了。 It is two years since his father lived here. 他爸爸不住这儿已有三年了。 （3）终止性动词现在完成时的否定式，已变成一种可以延续的状态，因此可以和表示一段时间的状语连用。如：I haven't left here since 1997.自从1997年以来，我一直没有离开过这儿。 （4）.提问for短语或since状语用how long。
(5).完成时的否定形式与比较级连用表达最高级含义。如：
I have never seen a better film.我从未看过一部更好的电影。（这部最好）
注：否定式与比较级连用表示最高级含义不一定用于完成时态。如：
--- What about going fishing? --- I can’t agree more.(我再同意不过了哦)
.语法—直接引语变间接引语（多数情况下变为宾语 从句）
(1). 直接引语如果是陈述句，变为间接引语时，用连词that 引导（口语中可以省略引导词）宾语从句。把下列句子变为间接引语或直接引语：
a. “I’ll visit my aunt tomorrow.” Lily said. ____________________________.
b. Our teacher often say to us,” It’s important to finish your homework.”
_______________________________________________________
c. They said they would meet at 9:00 p.m. that night.
“_______________________________________.”they said.
d. Lana said that she wasn’t mad at Marcia anymore.
Lana said’”_______________________________.”
(2). 直接引语如果是一般疑问句，变为间接引语时，变为由连词if 或whether引导的宾语从句。把下列句子变为间接引语或直接引语：
a. “Will you have a surprise party for me?” he asked me.
_______________________________________________
b. She asked Tom,” Can you help me?” ___________________________ c. He asked me if I knew who killed the cat.
He asked ，”__________________________________?”
(3). 直接引语如果是特殊疑问句，变为间接引语时，疑问词不变，宾语从句用陈述语序。把下列句子变为间接引语或直接引语：
a. The teacher asked,” Why are all the windows open?”
______________________________________________.
b. “When will you find out the time?” she asked me.
______________________________________________.
c. “What’s the matter with you, Alice?” he asked.
_____________________________________
d. They asked me where my friends were.
____________________________________________
(4).直接引语如果是肯定型祈使句，变为间接引语时，谓语变为tell sb. to do 或ask sb. to do 等句式。把下列句子变为间接引语或直接引语：
a. “Make sure the door is closed，” she said to her little son.
____________________________________________________.
b. “Tell me the news, please.” Li Hui said to me.
____________________________________________________.
c. He asked me to take care of his pet dog.
“_______________________________，” he said to me.
(5).直接引语如果是否定型祈使句，变为间接引语时，谓语变为tell sb.not to do 或ask sb. not to do等。把下列句子变为间接引语或直接引语：a. “Don’t smoke in the room,” he said to me.
________________________________________________.
b. “Don’t shout at the old man,” I said to him.________________________
c. Our teacher told us not to talk in class.
“____________________________, “ our teacher said to us.
d. My mother told me ___ others when they are in trouble.
A. not to laugh at B. don’t laugh at C. not laugh at D. never laugh at
2. if 条件句 在一般将来时的句子里（指主句），时间状语从句、条件状语从句等的谓语动词用一般现在时代替将来时。当主句含有情态动词或主句为祈使句时，从句也用一般现在时。如：You must pay for it if you lose it.
附加疑问句
附加疑问句由“陈述句 + 附加疑问句”两部分构成。一般有两种形式：前肯后否或前否后肯。对附加疑问部分应注意以下几点： 1）主语只能用人称代词；2）附加疑问句的not必须与（be /助/情）缩写；3）附加疑问句的时态必须与陈述部分的时态一致。
Tom is a worker, isn’t Tom? (改错) _______ You can swim, can not you? ( 改错) ______
特别注意以下几种反意疑问句
1.陈述部分含否定意味的词如few,little,never,nothing,nobody,no,hardly,none,seldom等时，附加疑问句应使用肯定形式；但如果陈述句部分含有un-, in-, im-, dis-等否定前缀构成的派生词时，该陈述句部分仍做肯定处理，疑问部分用否定形式。
He hardly speaks English, does he? They are unhappy, aren’t they?
2. this/that作主语时，无论是否指人，疑问部分用it；these/those用they。
This is your brother, isn’t it? Those are books,_______________?
3.陈述部分的主语如果是one, 疑问部分主语用one或he。One can’t be always young, can one/ he?
4.陈述部分的主语是everything, something, nothing, anything时，附加疑问句的主语应用it；陈述部分的主语是everybody, somebody, nobody, everyone, no one时，附加疑问句的主语应用they或he。
Everything is ready, ___________? Everyone is here, ____________?
5.陈述部分是祈使句时，附加疑问句一般用：will you? 但注意：
Let’s…（包括听者在内）, 附加疑问句一般用shall we? Let us/him/me …（不包括听者在内）， 附加疑问句一般用will you? Let’s go for a walk, shall we? Let him come in, will you?
6.陈述部分是there be结构时，应用be there?结构来完成。 There’s little water, _________？
7..陈述部分含that引导的宾语从句时，疑问部分通常与主句一致。但当主句陈述部分是”I / We think (believe, suppose) +宾语从句”时，附加问句应与从句一致。I’m sure + 宾语从句也是如此
1).She said I did it, _________? 2)We don’t think you are right，________?
3) I’m sure you’ll help me, ____________?
8.如果陈述部分是I am… , 附加疑问部分为aren’t I? I am older than you, __________?
9.陈述部分含had better, would like时， 疑问部分分别用hadn’t…?和wouldn’t…? You’d better go out , _______________? You’d like to go there, ____________________?
10.陈述部分是感叹句，附加问句的人称代词应与主语一致，疑问部分用否定形式。 What a kind girl, isn’t she? What a fine day, ___________?
11.the+形容词表示一类人，其附加疑问句主语用复数代词。 The poor had no right to speak at that time, did they?
12. 由neither…nor，either… or ， not only…but also ， both…and ， not…but，…or…， …and…等连接的并列主语，附加疑问部分用复数。
Neither you nor I am wrong, are we? Both Jack and Tom went there, didn’t they?
13.当陈述部分含有have to时，附加疑问部分的助动词应根据have 的变化，分别用don’t， doesn’t， didn’t。 He has to take your advice, doesn’t he?
14.当陈述部分的主语是从句、不定式、动名词或词组时，附加疑问部分的主语通常用it。 What he said at the meeting is very important, isn’t it? Swimming in rivers is a good sport, _____________?
15.当陈述部分含有wish时，附加疑问部分的助动词用may。I wish to use your computer, may I?
16. 当陈述部分的谓语是“used to+动词原形（过去常常干某事）”时，疑问部分用“didn’t+主语”或“usedn’t +主语”。 He used to live in London, didn’t he? / usedn’t he?
❾ 初中英语比较级同级比较语法讲解
英语中的比较级与最高级都是针对形容词和副词而言的，首先要把该词转化为比内较级的容形式：1，单音节词尾er，如hard-harder 2,以e结尾的词直接加r，3， 以辅音结尾，而且前面只有一个元音字母的，双写尾字母，再加er,如hot-hotter, 4,以辅音字母加y结尾的双音节词，变y为i，再加er, 5，其他双音节词及多音节词大都在前面加more.
一些不规则的情况：good-better-best, much/many-more-most,far-further-furthest
用法：1，比较级加than,Tom is taller than you! 2, the+比较级，the+比较级，意思是，越...越... The more you study,the more you know! 你越是努力学习，你知道的就越多
❿ 八年级下册英语语法，比较级和最高级的用法
比较级的用法
1.比较级常用的句型结构
(1)“as+原级+as”表示“与…一样”
(2)“not
as/so+原级+as”表示“与…不一样”
（3）“回比较级+than”表示“比都…”
（4）“最高级+比较的范围”“答…中最…”
2.特殊用法：
（1）比较级+and+比较级
表示“越来越…”
（2）more
and
more
+原级
表示“越来越…”
(3)“the
比较级,the比较级
……”表示“越…就越…”
（4）“the
比较级+of……”表示“两者中较…”