高中英語(yǔ)條件狀語(yǔ)從句的句型
在高中英語(yǔ)的學(xué)習(xí)中，學(xué)生會(huì)學(xué)習(xí)到很多的重要的句型，下面學(xué)習(xí)啦的小編將為大家?guī)?lái)?xiàng)l件狀語(yǔ)的句型的介紹，希望能夠幫助到大家。
高中英語(yǔ)條件狀語(yǔ)從句的句型介紹
1條件狀語(yǔ)從句
句型1
When / So long as / As long as / Once +從句，+主句。(從句也可以放在主句之后。)如：
As long as you give me any money, I will let you go.只要你給我一些錢(qián)，我就讓你走。
Once you have begun to learn English, you should learn it well. 一旦你開(kāi)始學(xué)習(xí)英語(yǔ)，你應(yīng)該把它學(xué)好。
句型2
主句+on condition that+從句.如：
I will go with you on condition that you give me a sum of money.我和你一起去的條件是你給我一些錢(qián)。
句型3
主句+unless+從句.(注意：由于unless本身是否定詞，所引導(dǎo)的從句的謂語(yǔ)動(dòng)詞用肯定而不用否定。)如：
I will go there tomorrow unless it rains.我明天去那兒除非下雨。
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句型4
祈使句，+and/ and then+主句。(注意：祈使句也可用一個(gè)名詞短語(yǔ)。)如：
Use your head, and you will find a good idea.動(dòng)腦筋想一想，你就會(huì)想出一個(gè)好主意。
Another word, and I will beat you.你再說(shuō)一句，我就揍你。
句型5
If +necessary / impossible/ important等，+主句.(注意：if與形容詞之間的it is被省略。)如：
If necessary, I will do it. 如果有必要的話，我來(lái)做此事。
2原因狀語(yǔ)從句
句型1
主句+in case+從句.(in case表示以免)如：
I will take my raincoat in case it rains.我要把雨衣帶上以免下雨。
句型2
主句+due to / because of / owning to / + the fact that +從句。如：
He did not come to school because of the fact that he was ill.由于他有病了，所以沒(méi)有來(lái)上學(xué)。
高中英語(yǔ)
以形式主語(yǔ)it引導(dǎo)的句型
句型1
It (so) happened(chanced) that +clause. = sb. happened /chanced to do sth. =sb.did sth. by chance. 如：
It happened that he was out when I got there. 當(dāng)我到那兒時(shí)，碰巧他不在。=He happened to be out when I got there.= It chanced that he was out when I got there= He was out by chance when I got there.
句型2
It seems that sb. do/ be doing/ have done/ had done= Sb. seems to do/ be doing/ have done/to be done/to have been done(還有動(dòng)詞appear等可這樣使用)如:
It seemed that he had been to Beijing before.他好象以前去過(guò)北京。=He seemed to have been to Beijing before.
句型3
It is / was+被強(qiáng)調(diào)的部分+that(who)+剩余的部分.如：
It wasn’t until he came back that I went to bed.直到他回來(lái)我才睡覺(jué)。(一定要注意被強(qiáng)調(diào)句型中的謂語(yǔ)動(dòng)詞否定的轉(zhuǎn)移)。 It was because he was ill that he didn’t come to school today.只因?yàn)樗胁×私裉鞗](méi)有來(lái)上學(xué)。(只能用because而不能用for, as 或since)
It is I who am a student. 我確實(shí)是個(gè)學(xué)生。(句中am不能用are來(lái)代替。)
句型4
It is high time (time/ about time)+ (that) 主語(yǔ)+should do / did+其它。(從句中的謂語(yǔ)動(dòng)詞用的是虛擬語(yǔ)氣。)如:
It is high time that we should go / went home.我們?cè)摶丶伊恕?/p>
句型5
It is / was said ( reported…)+that+從句. 如：
It was said that he had read this novel.據(jù)說(shuō)他讀過(guò)這篇小說(shuō)。=He was said to have read this novel.
句型6
It is impossible / necessary/ strange…that clause.(從句中的謂語(yǔ)用should+do / should have done，其形式是虛擬語(yǔ)氣。)如：
It is strange that he should have failed in this exam.真奇怪，他這次考試沒(méi)有及格。
句型7
It is + a pity/ a shame…that clause.(注意從句中的謂語(yǔ)動(dòng)詞用should do或should have done的形式，但should可以省略。)如：
He didn’t come back until the film ended. It was a pity that he should have missed this film. 他直到電影結(jié)束才回來(lái)。他沒(méi)有看到這部電影真可惜。
句型8
It is suggested / ordered/ commanded /…that +clause.(從句的謂語(yǔ)動(dòng)詞用should do, 但should可以省略。)如：
It is suggested that the meeting should be put off.有人建議推遲會(huì)議。
句型9
It is/was+表示地點(diǎn)的名詞+where+從句。(注意本句不是強(qiáng)調(diào)句型，而是以where引導(dǎo)的定語(yǔ)從句。)如：
It was this house where I was born.請(qǐng)比較：It was in this house that I was born.(后一句是強(qiáng)調(diào)句型。)
句型10
It is / was +表示時(shí)間的名詞+when+從句。(注意本句型也不是強(qiáng)調(diào)句型，而是以when引導(dǎo)的定語(yǔ)從句。)如：
It was 1999 when he came back from the United States. 請(qǐng)比較：It was in 1999 that he came back from the United States.
句型11
It is well-known that+從句。如：
It is well-known that she is a learned woman.眾所周知，她是個(gè)知識(shí)淵博的婦女。
句型12
It is +段時(shí)間+since+主語(yǔ)+did. 請(qǐng)比較：
It was +段時(shí)間+since+主語(yǔ)+had done. 如：
It is five years since he left here.他已經(jīng)離開(kāi)這兒五年了。
It was five years since he left here.(同上)
注意下列句型的翻譯:It is five years since he lived here.他從這兒搬走已經(jīng)有五年了。
句型13
It +謂語(yǔ)+段時(shí)間+before+主語(yǔ)+謂語(yǔ).( before引導(dǎo)的是時(shí)間狀語(yǔ)從句。) 如：
It wasn’t long before the people in that country rose up.沒(méi)有多久那個(gè)國(guó)家的人民就起義了。
It will be three hours before he comes back.三個(gè)小時(shí)之后他才能回來(lái)。
句型14
It is +形容詞(possible, impossible, necessary等) +for+ sb.+ to do. 如：
It is impossible for me to finish this work before tomorrow.我明天之前完成此工作是不可能的。
句型15
It is +(心理品質(zhì)方面的)形容詞+of + sb. +to do.= 主語(yǔ)+ be +形容詞+to do.(常用的形容詞有：kind, stupid; foolish, good, wise等。)如：
It is kind of you to help me.=You are kind to help me.你真好給我提供了幫助。
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