❶ 英語中：條件句和條件狀語從句區別
沒區別的。
條件句就是條件狀語從句，條件句不可能當主句。
❷ 英語中條件狀語從句的用法
條件狀語從句表示主句的動作發生的條件、假想、推測或意願。用連詞
if,
unless
和起連接作用的短語
except
that;
in
case
that;
on
condition
that;
provided/providing
that;
so/as
long
as;
suppose/supposing
that
引導。
用法:
1.從句表示的條件客觀上是現實的，常用陳述語氣，如:
If
the
stamp
is
torn,
it's
no
good
for
my
collection.如果郵票是破的，那我收集起來就沒有用了。
Suppose
all
the
doors
are
locked,
how
will
you
get
into
the
house?
假如所有的門都鎖上了，你怎麼會進到這所房子呢?
2.從句表示的條件同事實相違背或不可能實現，通常用虛擬語氣。如:
If
I
were
captain
of
a
ship,
I
would
take
you
on
a
voyage
round
the
world.如果我是一艘輪船的船長，我將帶你航海環游世界。
注意事項:
1.用一般現在時表示將來時。
The
meeting
will
be
held
out
of
doors
unless
it
rains.除非下雨，大會將在戶外舉行
2.用選擇完成時替代將來完成時。
If
I
have
made
a
mistake,
I
will
try
to
remedy
it.如果我犯了錯誤，我將會努力改正
3.will用在真實條件狀語從句中是情態動詞，表示意願或決心，而不是單純表示將來。
I
will
tell
you
if
you
will
come
on
Friday.如果你願意星期五來，我將告訴你。
還有其他一些情況，你暫時用不到，以後自己多注意。
❸ 英語if引導的條件狀語從句重點
學習" if " 引導的條件狀語從句的用法,現在總結一下:
if 條件句不一般,幾個要點記心間;
條件句,放在前,逗號要放句中間。
條件句表可能，主句多用將來時；
條件句表事實，主句常用現在時。
在 if 引導的條件狀語從句中，如果從句談論的是一個有可能發生的事實及其產生的相關的結果，主句用一般將來時態，從句用一般現在時態。如：
We can walk there if we can't find a bus .
If it rains tomorrow ,we will not go to the zoo.
What will you do if you find a panda in danger.
如果 if 條件句談論的是重復發生和預示要發生的情景和事件，則主從句大多用一般現在時態。如：
If bears are in danger ,they attack people.
注意 ：
在 if 引導的條件狀語從句中，if 和條件句位置靈活，可直接放在主句後面，若 if 條件句放句首，
從句後面要加逗號，和主句隔開。
還要注意前後時態一致原則
❹ 求助初中英語條件狀語從句詳解
您好，我是杭州抄精， 銳teacher。
狀語從句 (Adverbial Clause) 狀語從句指句子用作狀語時，起副詞作用的句子。它可以修飾謂語、非謂語動詞、定語、狀語或整個句子。根據其作用可分為時間、地點、原因、條件、目的、結果、讓步、方式和比較等從句。狀語從句一般由連詞(從屬連詞)引導，也可以由片語引起。從句位於句首或句中時通常用逗號與主句隔開，位於句尾時可以不用逗號隔開。具體您可以到我們這里了解一下。錦和大廈。
❺ 英語語法 關於If引導的條件狀語從句或虛擬語氣
If i were on the spot that day,I would have been able to prevent the disaster from happening,
這句話地意思是：如果那天是我在當班，我就能夠阻止災難的發生了。
這里用的的確是虛擬語氣，虛擬的也是過去的時刻發生的事，但是並不是過去的事情都得用過去完成時來表虛擬，這里用were 並沒有錯
但是 你如果用完成時也是可以的：If i had been on the spot that day,I would be able to prevent the disaster from happening,這個句子也是對的
這兩個都是虛擬的過去，但是並非二者選其一，兩個都是對的啊
你舉得這個例子：If I were not busy, I would have come.也表過去
如果我不忙（過去的某個時間），我就去了
下面這兩個句子應該會對你有啟發：
If I were you, I would have taken his advice.我要是你，我就採納了他的建議。（從句指現在，主句指過去）
If the weather had been more favorable, the crop would be growing still better.如果氣候更適宜一些，莊稼會長得更好。（從句指過去，主句指現在）
ps：if I were you ，I would take this answer.
希望採納
❻ 英語的條件狀語從句咋寫
條件狀語從句可分為真實性和非真實性（虛擬語氣）兩種。
真實性條件狀語從句：內主句用一般將容來時，條件狀語用一般現在時，if
it
rains
tomorrow
we
won't
go
to
the
beach.也不是絕對的，也有一些變形
主句也可以是祈使句，例如please
come
to
my
party
if
you
have
time.
主句也可是情態動詞，例如you
can
take
a
nap
if
you
are
tired.
從句也可是現在進行時例如，if
he
is
working
i
won't
disturb
him.
❼ 英語語法狀語]從句
定語從句是由關系代詞和關系副詞引導的從句，其作用是作定語修飾主句的某個成分，定語從句分為限定性和非限定性從句兩種。狀語從句分為時間狀語從句，結果狀語從句，讓步狀語從句，原因狀語從句，條件狀語從句以及行為方式狀語從句。名詞從句包括主語從句，賓語從句，表語從句和同位語從句及there be句型。
一、 限定性定語從句
1. that即可代表事物也可代表人，which代表事物；它們在從句中作主語或賓語，that在從句中作賓語時常可省略關系詞，which在從句中作賓語則不能省略。而且，如果which在從句中作「不及物動詞＋介詞」的介詞的賓語，注意介詞不要丟掉，而且介詞總是放在關系代詞which的前邊，但有的則放在它原來的位置
2. which作賓語時，根據先行詞與定語從句之間的語義關系，先行詞與which之間的介詞不能丟
3. 代表物時多用which，但在帶有下列詞的句子中用that而不用which，這些詞包括all, anything, much等，這時的that常被省略
4. who和whom引導的從句用來修飾人，分別作從句中的主語和賓語，whom作賓語時，要注意它可以作動詞的賓語也可以作介詞的賓語
5. where是關系副詞，用來表示地點的定語從句
6. when引導定語從句表示時間
〔注〕值得一提的是，表示時間「time"一詞的定語從句只用when引導，有時不用任何關系代詞，當然也不用that引導
By the time you arrive in London, we will have stayed there for two weeks.
I still remember the first time I met her.
Each time he goes to besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
7. whose是關系代詞，修飾名詞作定語，相當於所修飾成分的前置所有格
8. 當從句的邏輯主語是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing時，常用there is來引導
二、非限定性定語從句：非限定性定語從句的作用是對所修飾的成分作進一步說明，通常和主句間用逗號隔開，將從句拿掉後其他部分仍可成立
1. which引導的非限定性定語從句來說明前面整個句子的情況或主句的某一部分
2. 在引導限定性定語從句時，that有時相當於in which, at which, for which或at which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed. 人們對白日做夢的態度正在改變，這與人們對夜間做夢的看法的變化有非常相似之處。
I like the music for the very reason that(for which) he dislike it. 我出於某種原因喜歡這種音樂，而他恰恰與我相反。
We arrived the day that(on which) they left. 剛好我們到的那天他們走了。
3. 有時as也可用作關系代詞
4. 在非限定性定語從句中，不能用that，而用who, whom代表人，用which代表事物
狀語從句
§ 1狀語從句的種類
用來修飾謂語動詞、其它動詞、定語、狀語或整個句子的從句叫做狀語從句。狀語從句可分為：
1.時間狀語從句；(adverbial clause of time)
2.地點狀語從句；(adverbial clause of place)
3.原因狀語從句；(adverbial clause of cause)
4.條件狀語從句；(adverbial clause of condition)
5.目的狀語從句；(adverbial clause of purpose)
6.讓步狀語從句；(adverbial clause of concession)
7.比較狀語從句；(adverbial clause of comparison)
8.程度狀語從句；(adverbial clause of degree)
9.方式狀語從句；(adverbial clause of manner)
10.結果狀語從句。(adverbial clause of result)
§2狀語從句的時態特點
一般情況下，時間和條件狀語從句的謂語動詞一般用「一般現在時」表示「一般將來時」，用「現在完成時」表示「將來完成時」。例如：
I will call you as soon as I arrive in Beijing. 我一到北京就給你打電話。（這是由as soon as引導的時間狀語從句，從句中的謂語動詞arrive是一般現在時，表示一般將來時，決不可用will arrive）
As soon as I have finished this work, I will go home. 我一完成此工作，就回家。（從句中的謂語動詞用現在完成時have finished，表示將來完成時,決不可用will have finished）
If he comes back, please let me know.如果他回來了，請通知我。（從句中的謂語動詞用comes back,表示一般將來時，決不可用will come back）
二 時間狀語從句
§3時間狀語從句（adverbial clause of time）
1.由when, while, as引導的時間狀語從句。例如：
When you think you know nothing, then you begin to know something.當你以為自己一無所知的時候，你就是在開始知道一些事物了。
When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bursts out , it blows up everything with it.當真理被埋在地下的時候，它在生長，它感到壓抑，它蓄存著這么一種爆炸性力量，一旦冒出，它就會炸破一切！
Strike while the iron is hot. 趁熱打鐵。
Will you watch my clothes while I have a swim. 我游泳的時候，請你照看一下我的衣服。
You can feel the air moving as your hand pushes through it. 當你的手在空氣中揮動的時候，你就能感覺到空氣在流動。
Our headmaster laughed as she spoke.我們的校長邊談邊笑。
【區別】when, while和as的區別：when引導的從句的謂語動詞可以是延續性的動詞，又可以是瞬時動詞。並且when有時表示「就在那時」。例如：
When she came in, I stopped eating.她進來時，我在吃飯。(瞬時動詞)
When I lived in the countryside, I used to carry some water for him.當的住在農村時，我常常為他擔水。（延續性的動詞）
We were about to leave when he came in.我們就要離開，就在那時他進來了。
While引導的從句的謂語動作必須是延續性的，並強調主句和從句的動作同時發生（或者相對應）。並且while有時還可以表示對比。例如：
While my wife was reading the newspaper, I was watching TV. (was reading是延續性的動詞，was reading和was watching同時發生)
I like playing football while you like playing basketball.我喜歡踢足球，而你喜歡打籃球。（對比）
As表示「一邊……一邊」，as引導的動作是延續性的動作，一般用於主句和從句動作同時發生；as也可以強調「一先一後。例如：
We always sing as we walk.我們總是邊走邊唱。（as表示「一邊……一邊」）
As we was going out, it began to snow.當我們出門時，開始下雪了。（as強調句中兩個動作緊接著先後發生，而不強調開始下雪的特定時間）
2.由before和after引導的時間狀語從句。注意before引導的從句不再用否定式的謂語，並且當before引導的從句位於主句之後，有時譯成「就，才」。還要注意主句和從句之間的時間關系。當主句用將來時，從句總是用現在時；如果before引導的從句謂語用的是過去時，則主句動詞多用過去完成時，這樣以便體現動作發生的先後。After表示主句動作發生在從句動作之後。主句和從句的動作的時間關系正好與before引導的從句相反。例如：
It will be four days before they come back. 他們要過四天才能回來。
Einstein almost knocked me down before he saw me.愛因斯坦幾乎把我撞倒才看到我。
My father had left for Canada just before the letter arrived.我父親恰好在信到之前去加拿大了。
They had not been married four months before they were divorced. 他們結婚還不到四個月就離婚了。
After you think it over, please let me know what you decide.你仔細考慮過以後，告訴我你是怎樣決定的。
After we had finished the work, we went home.完成工作之後，我們回家了。（從句用過去完成時，主句用一般過去時）
3.由till或until引導的時間狀語從句。till和until一般情況下兩者可以互換，但是在強調句型中多用until。並且要注意的是：如果主句中的謂語動詞是瞬時動詞時，必須用否定形式；如果主句中的謂語動詞是延續性動詞時，用肯定或否定形式都可以，但表達的意思不同。例如：
I didn't go to bed until（till） my father came back.直到我父親回來我才上床睡覺。
It was not until the meeting was over that he began to teach me English.直到散會之後他才開始教我英語。
I worked until he came back.我工作到他回來為止。
I didn't work until he came back.他回來我這才開始工作。
Please wait until I arrived.在我到達之前請等我。
4.由since引導的時間狀語從句。 since引導的從句的謂語動詞可以是延續性的動詞，又可以是瞬時動詞。一般情況下，從句謂語動詞用一般過去時，而主句的謂語動詞用現在完成時。但在It is ＋時間＋since從句的句型中，主句多用一般現在時。例如：
I have been in Beijing since you left. 自從你離開以來，我一直在北京了。
Where have you been since I last saw you? 自上次我和你見面以後，你到哪裡去了？
It is four years since my sister lived in Beijing. 我妹妹不在北京住有四年了。
It is five months since our boss was in Beijing.我們老闆離開北京有五個月了。
5.由as soon as, immediately, directly, instantly, the moment, the instant, the minute, 等引導的時間狀語從句。這些連詞都表示「一……就」。例如：
I will go there directly I have finished my breakfast. 吃完早飯，我立即到那裡去。
The moment I heard the news, I hastened to the spot.我一聽到消息，馬上趕到了出事地點。
As soon as I reach Canada, I will ring you up. 我一到加拿大，就給你來電話。
【注意】hardly(scarcely, rarely)…when / before, no sooner…than相當於as soon as之意。主句用過去完成時，從句用一般過去時。當hardly, scarcely, rarely和no sooner位於句首時，主句應用倒裝語序。例如：
He had no sooner arrived home than he was asked to start on another journey. 他剛到家，就被邀請開始另一旅程。
No sooner had the sun shown itself above the horizon than he got out of bed to commence work.太陽剛從地平線上升起，他就起床勞動去了。
Hardly had I sat down when he stepped in.我剛坐下，他就進來了。
He had hardly fallen asleep when he felt a soft touch on his shoulder.這個阿拉伯人剛要入睡就感到肩膀上被輕輕一觸。
6.由by the time引導的時間狀語從句。注意時態的變化：在一般情況下，如果從句的謂語動詞用一般過去時，主句的謂語動詞用過去完成時；如果主句的謂語動詞用一般現在時，主句的謂語動詞用將來完成時。例如：
By the time you came back, I had finished this book.到你回來時，我已經寫完這本書了。
By the time you come here tomorrow, I will have finished this work. 你明天來這兒的時候，我將已經完成此工作了。
7.由each time, every time和whenever引導的時間狀語從句。例如：
Each time he came to Harbin, he would call on me. 他每次來哈爾濱，總是來看我。
Whenever that man says「To tell the truth」, I suspect that he's about to tell a lie.每當那個人說「說實在話」的時候，我猜想他就要說謊了。
You grow younger every time I see you. 每次遇到你，見你更年輕了。
8.由as long as和so long as引導的時間狀語從句。這兩個連詞表示「有多久……就多久」。例如：
You can go where you like as long as you get back before dark. 你可以隨意到哪裡去，只要在天黑以前回來就行。
I will fight against these conditions as long as there is a breath in my body! 只要我一息尚存，我就要反對這種境況。
三 地點狀語從句
§4地點狀語從句 (adverbial clause of place)
地點狀語從句一般由連接副詞where, wherever等引導，已經形成了固定的句型，例如：
句型1：Where＋地點從句，（there）＋主句。
【注意】此句型通常譯成「哪裡……哪裡就……」；主句在從句後面時，there可用可不用；如果主句在從句的前面時，一般都不用there。例如：
Where there is no rain, farming is difficult or impossible.在沒有雨水的地方，耕作是困難的，或根本不可能的。
They were good persons. Where they went, there they were warmly welcomed. 他們都是好人。因此他們走到哪裡都受到熱烈歡迎。
You should have put the book where you found it. 你本來應該把書放回原來的地方。
Where the Communist Party of China goes, there the people are liberated.哪裡有了中國共產黨，哪裡人民得解放。
句型2：Anywhere/ wherever＋地點從句，＋主句。
【注意】anywhere本身是個副詞，但是，常可以引導從句，相當於連詞，意思相似於wherever, anywhere引導的從句可位於主句之前，也可以位於主句之後。 而wherever本身就是個連詞，表示「在何處，無論何處」。例如：
Wherever the sea is , you will find seamen.有海就有海員。
❽ 英語條件狀語從句
If the students take the mobile phones with them , they will play it in class .
❾ 英語中從句的語法大全
英語中六大從句用法總結
1.主語從句
1）主語從句可直接位於主語的位置，如果從句較長，謂語又較短，可用it作形式主語，而將從句放在句末。常見的句型有：
*It is a fact\a pity\a question\good news that...
*It seems\appears\happened\has turned out that...
*It is clear\important\likely\possible that...
*It is said\reported\estimated\has been proved that...
It is said that comic books create a connection between people of the same generation.
It seems that the performance is very useful.
2)what引導的主語從句表示「...的東西時」，一般不用it作形式主語。
What we lack is experience.
3)what,who,when,why,whether等詞含有各自的疑問意義，但它們引導的主語從句，都用陳述語序。
How the plan is to be carried out should be discussed again.
I did know why I felt like crying.
2.賓語從句
1）賓語從句可位於及物動詞、介詞和某些形容詞後。連詞that常可省略。介詞後一般接疑問詞引導的賓語從句。in that(因為),except that(除了),but that(只是）已構成固定搭配，其他介詞後一般不接that引導的賓語從句。
*I promised that I would change the situation.
*All this is different from what American young people would say about friendship.
*He is certain that watching so much television is not good for children.
*This article is well-written except that it is a bit too long.
2)賓語從句後如有賓補，要用形式賓語it來代替，而把賓語從句移至賓補之後。
He has made it clear that he would not change his mind.
3)在think,believe,suppose,expect等動詞後的賓語從句中，如果謂語是否定的，一般將否定詞移至主句謂語上，賓語從句則變成肯定形式。
He didn't think that the money was well spent.
3.表語從句
表語從句出現在結構為「主語+系動詞+表語從句」的句子中。表語從句除可用that,what,when,why,whether,how等引導外，還可由because,as if(though)等引導。that常可省略。如主句主語為reason,只能用that引導表語從句，不可用because.
Perhaps the most important thing to remember is that there is no one common type of life in America.
The reason why so many people died there is that there were not enough food supplies.
It looks as if successful international cultural communication will make the world smaller.
4.同位語從句
同位語從句用於對前面出現的名詞作進一步說明，一般用連詞that引導，由於先行名詞的意義不同，也可用whether,who,when,where,what,why,how等引導。常見的先行名詞有fact,idea,belief,news,hope,conclusion,evidence,suggestion,order,problem,report,decision.有時由於謂語較短，將同位語從句位於謂語之後。
She finally made the decision that she would join the fashion show.
I had no idea how many books I could borrow at a time.
The news came that their team had won the championship.
5.定語從句
定語從句所修飾的先行詞可以是名詞或代詞，也可以是一個句子。定語從句通常位於先行詞之後，由關系代詞或關系副詞引導。
*限制性定語從句
限制性定語從句修飾先行詞，對先行詞起修飾作用，緊接先行詞之後，無逗號，若省去，原句意思不完整。引導定語從句的關系代詞有who,whom,whose,which,that等。who,whom,whose用於指人，whose有時也可指物，相當於of which；which用於指物；that既可指人也可指物，但只用於限制性定語從句中。關系代詞除了引導定語從句，替代先行詞外，還在從句中擔任主語、賓語、定語等。
The computers and cables which make up the Internet are owned by people and organizations.
Those who live alone or who are sick may have trouble in getting close to other people.
The girl whose parents died in an accident is living with her grandmother.
1)當先行詞是all,anything,everything,something,nothing等不定代詞或先行詞前有first,last,any,few,much,some,no,only以及形容詞最高級修飾時，只能用關系代詞that引導從句。
That is all that I've heard from him.
He's the first person that I'm going to interview this afternoon.
2)關系代詞的省略
在從句中作賓語的關系代詞常可省略。關系代詞緊跟介詞，作介詞賓語時不可用that，只可用which或whom引導從句，並且不可省略，但當介詞位於賓語從句句末時，作為介詞賓語的關系代詞仍可用that，也可省略。
This is one of those things with which we have to put up.
This is one of those things (which\that) we have to put up with.
3)引導定語從句的關系副詞有when,where,why等。關系副詞在從句中作狀語，意義上相當於一個「介詞+which」的結構。
Even in comic books where(=in which) there are no words,the stories are fully expressed through the drawings.
No one knows the reason why(=for which) he was so angry that day.
5.定語從句
*非限制性定語從句
非限制性定語從句既可修飾先行詞，也可修飾整個主句，起補充說明作用，與主句之間有逗號隔開，若省去，原句意思不受影響。不可用that引導非限制性定語從句。關系詞不可省略。
Every object has a gravitational pull,which is rather like magnetism.
*「介詞+which\whom\whose」引導的定語從句
「介詞+which\whom\whose」可引導限制性定語從句，也可引導非限制性定語從句，該結構中介詞的選擇取決於從句謂語動詞的固定搭配，或先行詞的習慣搭配。
This is the computer on which he spent all his savings
It is written by a person with whom we are all familiar.
*as引導的定語從句
as引導的定語從句主要用於「such...as」及「the same...as」的結構中，代替先行詞是人或物的名詞。as引導非限制性定語從句時，代替整個主句，從句可位於主句之前、之後或中間。
These are not such problems as can be easily solved.(as代替先行詞problems)
As is mentioned above,no single company or group can control what happens on the Internet.(as代替主語)
6.狀語從句
*時間狀語從句
引導時間狀語從句的從屬連詞和片語有：
1）when,whenever,while,as,after,before,since,till,until,once等。
We have learnt quite a lot about it since we came here.
2)as soon as,hardly(scarcely)...when,no sooner...than,each(every) time,the moment,immediately(that)等。
As soon as I sent an e-mail message,I received positive responses.
The moment he heard the good news,he jumped with joy.
*地點狀語從句
引導地點狀語從句的連詞是where,wherever.
Wherever she went,she took her little daughter with her.
*原因、結果和目的狀語從句
1）引導原因狀語從句的從屬連詞有：because,as,since,now(that),seeing that,considering that,in that等。
Considering that he is a freshman,we must say he is doing well.
2)引導結果狀語從句的連詞有：so...that,such...that
,so that,that,so等。
Mickey Mouse is so attractive that the children are reluctant to leave.
3)引導目的狀語從句的連詞有：so that,in order that,for fear that,lest等，從句常使用may,might,can,could,would等情態動詞。
We got up early this morning so that we could catch the first bus to the railway station.
*條件和讓步狀語從句
1）引導條件狀語從句的連詞和片語有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等。
As long as you have the right equipment,you can use a telephone line to transmit computer data.
2)引導讓步狀語從句的連詞和片語有though,although,whether,even though,even if,no matter what(when,how...),whatever(whenever,wherever,however....)等。though,even if等引導狀語從句可轉換成含有as的部分倒裝結構，具有強調意義。其結構為「形容詞（副詞、動詞、名詞）+as+主語+謂語」。
No matter what you may say,I would not change my mind.
Young as he is,he is quite experienced in this work.(=though he is young)
Child as he is,he can speak English fluently.(=though he is a child)
*方式狀語從句
引導方式狀語從句的連詞有as,just as,as if,as though等。as if,as though引導的狀語從句中，謂語動詞常用虛擬語氣，表示與事實相反。
The young man made the experiment just as the teacher had taught him.
Everything went on as usual as if nothing had happened.