『壹』 八年级人教版下册英语的语法
给你个网址吧专：属http://www.pep.com.cn/
『贰』 人教版八年级下册英语第一单元至第四单元知识点总结
内容比较全面
建议多去人教网看看，有一些比较好的资料。
Unit1 Will people have robots?
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200505/t20050513_215815.htm
Unit2 What should I do?
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200503/t20050321_208772.htm
Unit 2 What should I do?（教案二）
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200505/t20050513_215816.htm
Unit2谈谈情态动词shall与should的用法
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200503/t20050321_208773.htm
?
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200503/t20050321_208774.htm
?（教案二）
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200505/t20050513_215817.htm
Unit4HesaidIwashard-working.
http://www.pep.com.cn/ce/czyy/bnjx/jxsj/200505/t20050517_216031.htm
题目：
http://www.pep.com.cn/ce/czyy/bnjx/pjcs/200706/t20070608_397195.htm
http://www.pep.com.cn/ce/czyy/bnjx/pjcs/200706/t20070608_397194.htm
『叁』 人教版英语八年级下册第四单元
Last night on "Young Lives",it was an exciting night. There was a surprising party. Lana said she would bring some drinks and snacks to Marcia's house on Friday night. Marcia was still very glad. Then they went to the park outside Marcia's house. Marcia and Lana were surprised to see their classmates. They smiled. Then every student took out their gifts. They laughed,ate and drank.How happy they are！
Last night on"Young Lives",Marcia was mad at Lana.The next day, Ben told Lana that Marcia was mad at her.So,Lana went to Marcia's house and said sorry to her.Then,Marcia got over Lana.And she would have the party again on Friday.Ben called everyone again,and told them that Marcia got over Lana,Marcia would have a party again on Friday.
『肆』 人教版八年级英语上册第四单元语法!!急!!要各个单词的用法!!
火眼金睛：
1.“花销”细盘点：
spend,take,cost和pay的用法：
初中阶段关于“花钱”，“花费时间”的词常见的有以下五个：buy，cost，pay（for），spend和take。很多学生对这几个词的词义和用法似懂非懂，用起来往往出错。其实这些词都与钱物有关，与时间有关的只有take和spend。下面具体谈一谈其用法：①spend指花钱，花费时间。主语是人。其常见结构分别为to spend money on sth．，spend time（in）doing sth．。
I spent six yuan on a new dictionary．
—How do you spend your spare time？
—I spend my spare time writing books．②take指花钱（＝cost）
It takes/costs me a lot of money to buy a big house．
= To buy a big house takes/costs me a lot of money.
take用来说明做某事需要多少时间，有三种不同的结构：
1）主语是人
She took the whole day to read the novel．（她花了一整天那本小说。）
2）主语是某种活动
The journey took me half an hour．
Reading the novel took her the whole day．
3）用形式主语it
It took me half an hour to get home yesterday．
It takes much time to do the shopping．
③pay（for），pay表示付给人家钱、帐单等；pay for表示买东西付款，也表示替别人付钱。主语是人。其常见结构是to pay sb．some money，pay money for sth．
You must pay me 100yuan a week for your meals．
How much did you pay for that book？ ④cost指花钱，表示价值或代价（此代价可以是时间）。主语是事或物或动词不定式短语。
其常见结构是to cost sb．some money。
The dictionary cost me 6yuan．
【小试牛刀】翻译：（1）我六十元钱买了一本词典 （五种译法）
(2)读这本书花了我一整天的时间 （四种译法）
(Keys:
（1）a．I bought the dictionary for 60 yuan．
b．The dictionary cost me 60 yuan．
c．I paid 60 yuan for the dictionary．
d．I spent 60yuan on the dictionary．
e．It took me60 yuan to buy the dictionary．
（2）a．I spent the whole day reading the book．
b．I took the whole day to read the book．
c．Reading the book took me the whole day．
d．It took me the whole day to read the book．)
2.“数目”要说清：
a number of…“许多”与the number of…“……的数字/数目”这两个词组的用法要分清：
①a number of…意思是“一些，若干”（= some），后接可数名词复数或代词，谓语动词用复数形式。
a number of…词组中还可以加入形容词表示数量大或小等（例如：a large/small number of…许多/少数……）。
②the number of…意思是“……的数字/数目”，介词of同其后名词构成介词短语，修饰the number.当它作主语时，谓语动词用单数。例如： Many people took part in 10,000-metre race, but only a number of them kept on running to the end. 许多人参加了10000米跑，但只有一些人坚持跑到底。
A number of my friends think I should take a holiday.
我的一些朋友认为我应该休假。
The number of students is about forty.学生人数大约是40人左右。
3.到达路线有几条：
arrive in/at,get to;reach意为“抵达，到达”，我们在句子中要正确运用。
【辨析】 arrive vi.到达什么地方，后接in或at,大的地方用in,小的地方用at；reach vt.后接地点名词；get to也可表示“到达”，后接地点名词，比以上两词更口语化，也可用get加副词（home,here,there等）。
题例：When did you __________ home?
A. go to B.arrive at C.reach in D.reach
【解析】 在英语中“到达”可表达为get to,arrive in/at和reach。get和ararrive是不及物动词，所以后面接宾语时，应借助于介词。而reach是及物动词，它后面可以直接跟宾语。但是本题的home是副词，副词前不可以有介词，所以此题的正确答案是D。
【拓展】arrive一词除了表示“到达”外还有“来到”、“出生”的意思：
Good weather is arriving．好天气就要来了。
My baby arrived last night．我的宝宝是昨天夜里出生的。
Too swift（快的） arrives as tardy（迟缓的） as too slow．
[谚语]欲速则不达。
4.条条大路通罗马：（All Roads Lead to Rome）
英语中表示交通方式的形式很多，但总的来说，不外乎两种方式，即： 用介词和动词来表示。
（一） 用介词表示。
（1） by + 表示交通工具的名词，泛指“乘/坐某种交通工具”，其中名词前无任何修饰语，且只能用单数。如：
He came by train, but his wife came by bus.
他坐火车来的，但他妻子坐汽车来的。
Travelling by elephant is great fun. 骑象旅行很有趣。
类似的词组还有：by car乘车；by plane乘飞机；by ship乘船；by taxi乘计程车；等。
（2） in/on + 表示交通工具的名词 , 或泛指或特指“乘/坐某种交通工具”，其中名词前常有冠词、物主代词、指示代词或名词所有格等修饰语，名词可以是单数或复数。
① bus，train，boat，plane，ship等有厢，有舱的名词前，用介词in或on。如：
We are going there in/on a bus.我们将乘公共汽车去那里。（泛指）
Don't come here on /in the ship．不要坐船来这里。（特指）
② bike或motorbike前，只能用介词on。如：
They go to work on their bikes.他们骑自行车上班。（特指）
She went out on her new motorbike.
她骑着她的新摩托车出去了。（特指）
③ car，taxi前，多用介词in。如：
We are going to France in John’s car.
我们将坐约翰的车去法国。（特指）
（3） by/on + 表示交通工具的名词，特指“乘/坐某一趟/辆/艘（车，船等）”，其中名词为单数，其前常有定冠词与数词或具体时刻一起作修饰语。如： They came here by/on the first bus.他们是坐头班车来的。
You can get there by/on the Number 10 bus / bus No.10.
你可以乘10路公共汽车到那里。
He went up to London by/on the 10:30 (train).
他是乘10时30分的火车去伦敦的。
（4） by + 表示交通工具的名词，泛指“乘/坐某种档次的交通工具旅行”，其中名词为单数，其前常有表示“等级或档次”的形容词作修饰语。如：
She travels by third-class train. 她乘三等车旅行。
I will go to Beijing by the fast train. 我将乘快车去北京。
He flew to Paris by first class (plane). 他坐头等舱飞往巴黎。
He went to Tokyo by a large ship.他乘一艘大船去了东京。
（5） by + 表示交通线路或交通线路所经范围的名词 ，表示“经由陆路/水路/空中等线路旅行或运输”，其中名词为单数或不可数，其前无任何修饰语。如：
Shall we go by land or by sea ? 我们是由陆路去还是由水路去？
It saves a lot of time to travel by air.
乘飞机旅行可以节省许多时间。
类似的词组还有：by water由水路；by road由公路；by rail由铁路；等。
（6） on + 表示人或动物特定身体部位的名词，表示“步行或骑马/骆驼”，其中名词只能是foot、horseback或 camelback，其前无任何修饰语。如：
She usually goes to school on foot. 她通常步行上学。
Our friends arrived on horseback.我们的朋友是骑马到的。
（7） on + 表示交通工具的动物名词，表示“骑驴/马/象/骆驼”，其中名词为donkey、horse、elephant或camel，其前常有不定冠词a/an。如：
The old man used to go out on a donkey.
那个老汉以前都是骑驴外出的。
He went there on a horse. 他骑马去了那里。
类似的词组还有：on an elephant骑象；on a camel骑骆驼。
二、 用动词表示。
（1）“动词 + to + 地点名词”或“动词 + 地点副词”。 这种动词主要是walk （步行），ride（骑车），drive（开车），fly（乘飞机），sail（乘船）等。如：
I usually walk to school. 我通常步行上学。
We sometimes ride to school. 我们有时骑车上学。
They drove to the station. 他们开车去了车站。
Jack flew there last Sunday. 杰克上星期乘飞机去那里了。
（2） “take a/the + 表示交通工具的名词”，表示“乘/坐……”。如：
Will you take a bus to go there？你乘汽车去那儿吗？
I took a taxi to the hospital. 我坐出租车到医院去了。
类似的表达还有：take a ship（乘轮船），take a plane（乘飞机）等。
（3） “ride a/an + bike，motorbike或表示交通工具的动物名词，表示“骑……”。如：
I ride a bike to work every day. 我天天骑自行车上班。
He came here riding a horse /an elephant. 他骑马/象来到了这里。
（4） “ride on/in + a/an + 表示交通工具的名词”，表示“乘/坐/骑……”。如：
The boy liked to ride on a motorbike.那男孩喜欢骑摩托车。
类似的表达还有：ride in/on a ship/train/plane/boat等。
【辨析】ride a bike着重动作；ride in/on a bike着重状态。
（5） “have/take a ride in/on + 表示交通工具的名词”，表示“乘/坐/骑一下/次……”。如：
Would you like to have/take a ride in my new car ?
你要不要坐坐我的新车？
He let me have/take a ride on his camel.
他让我骑了一下他的骆驼。
（6） “go for a ride in/on + 表示交通工具的名词”，表示“乘/坐/骑……去兜风”。如：
They went for a ride on their horses/bicycles.
他们骑马/自行车去兜了一圈。
I went for a ride on my horse before breakfast.
早餐前我骑马出去遛了遛。
巩固练习：
I:用by，in，on，take填空。
1．—How do you go to school every day？
—____ bike．
2．They will go to the cinema ____ bus．
3．He went to the park ____ a car yesterday．
4．Helen will go there ____ the 12：00 bus．
5．Will you ____ the bus to Beijing tomorrow？
II:就划线部分提问。
1．Mr Green goes to the post office by bike．（对划线部分提问）
2．Ann is going shopping on foot．（对划线部分提问）
（Keys：I: 1．By 2．by 3．in 4．on ／by 5．Take
II: 1. How does Mr Green go to the post office？
2. How is Ann going shopping ？ ）
5.否定也“温柔”：
“not all”是一个部分否定，可见否定也“温柔”。例如：In North America,not all students take the bus to school. (在北美，并非所有的学生都乘车上学。)
英语中的部分否定（即不完全否定）有如下一些表示方法：
一 ）all 的否定式：not all…（或：all…not）表示"并非都……"、"不是所有的都……" 例如： Not all bamboo grows tall. 并非所有的竹子都会长很高。
二）both 的否定式：not…both (或：both… not) "并非两个……都……" 例如：
I don't want both the books. 我不是两本书都要。
Both (the) windows are not open. 两扇窗子并不都开着。
三） every…的否定式： "不是每……都……" 例如：
Not everyone likes this book. 并非人人都喜欢这本书。
This flower is not seen everywhere. 这花并不是随处可见的。
四） always的否定式： "并非总是（并非一直）……" 例如：
He is not always so sad. 他并不是一直都这样悲伤。
五） all the time 的否定式： "并非一直……"、"未必老是……" 例如：
A foolish man doesn't make a mistake all the time.
笨人未必老是犯错误。
六） not…and…的否定式，被否定的往往是and后面的那一部分。 例如：
He did not speak clearly and correctly. 他讲得清楚但不正确。
She cannot sing and dance. 她会唱歌但不会跳舞。
如果将and 换成or，not 对其后面的两部分就全盘否定了。
He did not speak clearly or correctly. 他讲的既不清楚也不正确。
【注意】 如要对上述的all, both, every, always, 以及entirely, altogether, completely, quite 和 all the time 等词作完全否定，那就分别要用与之相对应的全否定词，如no, none, neither, no one, never, not (never)… at all 等。例如：
All of them can do it.--- None of them can do it.
Both are good.---Neither is good.
Everybody likes it. ---Nobody likes it.
He is always late. --- He is never late.
We don't trust them entirely. --- We never trust them at all.
He was here all the time. --- He was never here.
6.风云“聚”义厅：
本单元重点句子释义集锦：
1. How do you get to school? I walk to school.你是怎样到校的？我步行。
翻译：你们如何去上海？我乘飞机去，他坐火车去。
2. How about the white shirt? 这件白衬衫怎么样？
翻译：去游泳怎么样？
3.I usually walk but sometimes I take the bus.
我通常步行，但有时坐公共汽车。
翻译：他总是骑自行车上学，但这次他乘地铁上学了。
4.How long does it take you to get to school?
It takes about 10 minutes to walk and 15 minutes by bus.
你需要多长时间到校？步行大约10分钟，乘汽车15分钟。
翻译：建造这座桥工人们将花费1年多的时间。
5. How far is it from his home to school? About 10 kilometers.
从他家到学校有多远？大约10公里。
翻译：从地球到月球有多远？大约38万公里远。
6.Lin Fei’s home is about 10 kilometers from school.
林飞的家离学校大约10公里
翻译：我们学校到东湖公园大约7公里。
7. He leaves for school at around six-thirty.
他大约在6点30分动身去学校。
翻译：我们下星期去北京。
8. Then the early bus takes him to school.然后，他乘坐早班车到学校。
翻译：请把书带到学校来。
9.Thomas wants to know where Nina lives.托马斯想要知道尼娜住在哪里。
翻译：我想知道她认为交通怎么样。
10. In Japan, most students take trains to school, although others also walk or ride their bikes.
在日本，大部分学生乘坐火车上学，尽管其他人也步行或骑自行车。
翻译：他虽然有病，仍坚持学习。________________________________________
11. A small number of students take the subway to school.
小部分学生乘坐地铁上学
翻译：我有许多信件要写。
12.What do you think of the transportation in your town?
你对你们镇的交通认为怎么样？
翻译：你认为这本书怎么样？
13. She is dead but her memory still lives on.
她虽然死了，但人们仍然怀念她。
翻译：羊靠青草维持生命。
（Keys:
1.How are you going to Shanghai? I am going by plane,he′s going by train.
2.How about going swimming?
3.He usually ride a bike to school, but this time he takes the subway.
4.It took the workers over one year to build the bridge.
5.How far is it from the earth to the moon? About 380,000 kilometers.
6.Our school is about 7 kilometers from Donghu Park.
7.We are leaving/(leaves )for Beijing next week.
8.Please bring the books to school.
9.I want to know what she think of /(how she likes)the transportation.
10. He kept studying although he was ill.
11.I have a number of/(many/a lot of/lots of) letters to write.
12.What do you think of this book?
13.Sheep live on the grass.)
语法聚焦：
How引起的特殊疑问句
How引起的特殊疑问句可用来询问各种情况。例如：
(1) How are your parents?你父母好吗？ Very well, thank you. 很好，谢谢
(2) How do your spell the word? 这个词怎么拼？
(3) How do you like the film? 这电影你觉得怎么样？
=What do you think of…?(你认为……怎么样？)
(4) How do you usually go to school? 你通常怎么上学？
I usually go by bike. 我通常骑自行车上学的。
（5）How is the weather today?=What is the weather like today?
今天天气如何？
How构成的疑问句短语： how many多少（指可数的量） how much多少（不可数名词，也可以问价格）how often(问频率) how soon(问将来时间，多久)howl ong (问时间或物体长度) how far多远 how old多大年 龄
『伍』 人教版新目标初二英语上第四单元的语法要点
far+from depend+onmust+V原ill为表语形容词近义词sickso mucha number of相当于many 许多的意思a small number of一少部分a large number of 一大部分the number of ....的数量around the word=all over the word全世界重点语句1.can I help you？2.how far is it from here?3.how long does it take?4.thank you very much 5.you are welcome6.how do you get to school重点语法1.by+交通工具名词2.by+交通路线位置3.in+交通工具名词4.on+限定词+交通工具名词5.take a、the+交通工具名词6.ride+限定词+交通工具名词7.fly+to表示乘飞机；飞往8.表示步行去某地可用go to+某地+on foot，也可用walk to+某地9.not all译为不都相当于all..not...10.leave for意为动身去...11.leave..for...意为离开去...12.It takes +一段时间+to do sth以为做某事花费某人多长时间
『陆』 初二下英语1到4单元语法重点总结！！！
http://wenku..com/view/90e18d2c0066f5335a812139.html
『柒』 人教版八年级下册英语第四单元
was,(2)thought,told,was,wasn't,going,wasn't,would,told,wasn't
『捌』 关于八年级（人教版）英语前四单元知识点总结！
资料多,放不下
新目标八年级（上）英语复习提纲(全套)
Unit 1: How often do you exercise?
1. go to the movies 去看电影
2. look after = take care of 照顾
3. surf the internet 上网
4. healthy lifestyle 健康的生活方式
5. go skate boarding 去划板
6. keep healthy=stay healthy 保持健康
7. exercise=take(much)exercise=do sports锻炼
8. eating habits 饮食习惯
9. take more exercise 做更多的运动
10. the same as 与什么相同
11. be different from 不同
12. once a month一月一次
13. twice a week一周两次
14. make a difference to 对什么有影响
15. how often 多久一次
16. although = though虽然
17. most of the students=most students
18. shop=go shopping=do some shopping 购物
19. as for至于
20. activity survey活动调查
21. do homework做家庭作业
22. do house work做家务事
23. eat less meat吃更少的肉
24. junk food垃圾食物
25. be good for 对什么有益
26. be bad for对什么有害
27. want to do sth 想做某事
28. want sb to do sth想某人做某事
29. try to do sth 尽量做某事
30. come home from school放学回家
31. of course = certainly = sure当然
32. get good grades取得好成绩
33. some advice
34. hardly=not nearly / almost not几乎不
35. keep/be in good health保持健康
36.be stressed紧张的，有压力的
37. take a vacation 去度假
48.get back 回来
Unit 2 What’s the matter?
1. Have a cold 感冒
2. sore back 背痛
3. neck and neck 并驾齐驱，齐头并进
4. I have a stomachache 我胃痛
= I have got a stomachache
= There is something wrong with my stomach
= My stomach hurts
= I have (got) a pain in my stomach
5. What’s the matter? 怎么了？
= What’s the trouble (with you)?
= What’s your trouble?
= What’s wrong (with you)?
= What’ the matter (with you)?
=What has happened to you?
= Is there anything wrong (with you)? = what’s up?
6. sore throat 咽喉痛
7. lie down and rest 躺下休息
8. see a dentist 看牙医
9. drink lots of water 多喝水
10. hot tea with honey 加蜂蜜的热茶
11.That’s a good idea 好主意
12.That’s too bad 太糟糕了
13.I think so 我认为如此
14. I’m not feeling well. 我觉得不太舒服
= I’m not feeling fine/all right.
= I’m feeling ill/sick. =I feel terrible/bad.
= I don’t feel well.
15. get some rest 多休息
16. I have no idea = I don’t know 我不知道
17. stressed out 筋疲力尽
18. I am tired 我累了 He is tired. 他累了
19. a healthy lifestyle健康的生活方式
20. traditional Chinese doctors传统中医
21. a balance of yin and yang阴阳调和
22. you have too much yin.你阴气太盛
23. to eat a balance diet饮食平衡
24. healthy food 健康食品
25. stay healthy 保持健康
=keep healthy=keep in good health
= keep fit
26. enjoy oneself (myself, yourself, herself, himself, themselves, ourselves, itself
反身代词) 玩得高兴，过得愉快
=have a good time = have a wonderful time
= have fun
27. enjoy sth. =like sth. (名词)喜欢某物,
enjoy doing sth.喜欢做某事=like dong sth
practice doing sth.练习做某事，
mind doing sth. 介意做某事，
finish doing sth.完成某事，
give up doing sth.放弃做某事，
can’t help doing sth.忍不住做某事，
keep ding sth. 坚持做某事. （keep on doing sth. / keep sb. doing sth. ）
be busy doing sth. 忙着做某事
be used to doing sth.习惯于做某事
make a contribution to doing sth.为..做贡献
go on doing sth. 继续做某事
forget doing sth.忘记做某事
remember doing sth. 记得做某事
spend....(in) doing sth. 花（时间）来做某事
prefer doing sth.to doing sth.比起（做...）来更愿意（做...）
28. at the moment = now 此刻
29. Host family 东道家庭
30. Conversation practice会话练习
31. I’m sorry to hear that.听到此事我很难过
Unit 3 What are you doing for vacation?
1. babysit one’s sister 照顾妹妹
2. visit one’s grandmother 看望奶奶
3. spend time with friends 和朋友们一起度过时光
4. visit cousins 看望表弟等
5. go to sports camp 去运动野营
6. o to the beach 去海滩
7. go camping 去野营
8. Go shopping 去买东西
9. go swimming 去游泳
10. go boating去划船
11. go skating 去溜冰
12. go walking去散步
13. go climbing 去登山
14. go dancing去跳舞
15. go hiking 去徒步远足
16. go sightseeing 去观光
17. go house-hunting 去找房子
18. o on a hike 徒步旅行，
go bike riding 骑自行车旅行，
go fishing 去钓鱼
19. do some shopping 买东西
20. do some washing 洗衣服
21. do some cooking 作饭
22. do some reading 读书
23. do some speaking训练口语
24. do some sewing 做缝纫活
25. that sounds nice 那好极了
26. at home 在家
27. how about=what about ……怎么样？
28. how long 多长时间
29. how far 多远
30. how often 多长时间一次
31. how much, how many 多少
32. have a good time
=have fun= have a wonderful time
= enjoy oneself 玩得高兴，过得愉快
33. show sb. Sth.=show sth. to sb.出示某物给某人看
give me the book=give the book to me 给我书，
pass me the cup=pass the cup to me 把杯子递给我，
sell me the house=sell the house to me 把房子卖给我
buy me a book =buy a book for me 给我买书，
make me a cake = make a cake for me给我做蛋糕
34. get back=come back回来
35. rent videos租借影碟
36. take walks=go for a walk散步
37. think about 考虑
38. decide on= decide upon决定一个计划
39. something different 不同的事情
40．a great vacation 一个愉快的假期
41. I can’t wait 我等不及了
42. the famous movie star 著名的影星
43. an exciting vacation 激动人心的假期
44. Ask her about her plans 向她询问她的计划
ask sb. about sth.向某人询问某事
45. forget to do sth. 忘记要做某事
forget doing sth. 忘记做过某事
Unit 4 How do you get to school?
1. get to school 到校
2. get home 到家
3. how about=what about …….怎么样？
4. take the subway 乘地铁
5. ride a bike 骑自行车
6. take the bus乘公共汽车
7. take the train乘火车
8. take a taxi乘坐出租车
9. go in a parent’s car 坐父母的车
10. by bike, bike bus, by subway, by taxi, by car, by train
(乘坐……车，放在句尾)
11. have a quick breakfast 迅速吃早饭
12. the early bus 早班车 13. how far多远
14. take sb. to sp.带某人到某处
15. doing sth. takes sb. Some time/ money
=It takes sb. some time/money to do sth.
=sb. spends some time/money (on sth.)
=sb. spends some time/money (in) doing sth.
=sth. costs sb. some time/money
=sb. pay some money for sth.
花费某人多少时间/金钱做某事/某人花费多少金钱/时间做某事
16. bus stop公共汽车站，train station火车站，
subway station地铁站，bus station客运站
17. want to do sth.想做某事
18. walk to school 步行上学
19. in North America 在北美
20. in other parts of the world 在世界的其他地区
21. depend on=depend upon 依靠，靠……决定
22. not all 不是所有的
23. need to do sth.需要做某事
24. number of students学生数
25. a number of=many 许多
number前可用large, great, small修饰其谓语是复数
26. the number of….的数量，谓语是单数
27. don’t worry(about sth./sb.)别着急(为某人/事担心
28. around the world= all over the world世界各地，全世界