高中英語的條件狀語從句句式介紹
高中英語的條件狀語從句句式介紹
在英語的學習中，學生會學習到很多的句式，下面學習啦的小編將為大家帶來高中英語的條件狀語從句的句式介紹，希望能夠幫助到大家。
高中英語的條件狀語從句句式
1條件狀語從句
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，我就讓你走。
Once you have begun to learn English, you should learn it well. 一旦你開始學習英語，你應該把它學好。
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。
句型3
主句+unless+從句.(注意：由于unless本身是否定詞，所引導的從句的謂語動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。
句型4
祈使句，+and/ and then+主句。(注意：祈使句也可用一個名詞短語。)如：
Use your head, and you will find a good idea.動腦筋想一想，你就會想出一個好主意。
Another word, and I will beat you.你再說一句，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，我來做此事。
2原因狀語從句
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，所以沒有來上學。
高中英語以形式主語it引導的句型
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. 當我到那兒時，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.他好象以前去過北京。=He seemed to have been to Beijing before.
句型3
It is / was+被強調的部分+that(who)+剩余的部分.如：
It wasn’t until he came back that I went to bed.直到他回來我才睡覺。(一定要注意被強調句型中的謂語動詞否定的轉移)。 It was because he was ill that he didn’t come to school today.只因為他有病了今天沒有來上學。(只能用because而不能用for, as 或since)
It is I who am a student. 我確實是個學生。(句中am不能用are來代替。)
句型4
It is high time (time/ about time)+ (that) 主語+should do / did+其它。(從句中的謂語動詞用的是虛擬語氣。)如:
It is high time that we should go / went home.我們該回家了。
句型5
It is / was said ( reported…)+that+從句. 如：
It was said that he had read this novel.據說他讀過這篇小說。=He was said to have read this novel.
句型6
It is impossible / necessary/ strange…that clause.(從句中的謂語用should+do / should have done，其形式是虛擬語氣。)如：
It is strange that he should have failed in this exam.真奇怪，他這次考試沒有及格。
句型7
It is + a pity/ a shame…that clause.(注意從句中的謂語動詞用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. 他直到電影結束才回來。他沒有看到這部電影真可惜。
句型8
It is suggested / ordered/ commanded /…that +clause.(從句的謂語動詞用should do, 但should可以省略。)如：
It is suggested that the meeting should be put off.有人建議推遲會議。
句型9
It is/was+表示地點的名詞+where+從句。(注意本句不是強調句型，而是以where引導的定語從句。)如：
It was this house where I was born.請比較：It was in this house that I was born.(后一句是強調句型。)
句型10
It is / was +表示時間的名詞+when+從句。(注意本句型也不是強調句型，而是以when引導的定語從句。)如：
It was 1999 when he came back from the United States. 請比較：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，她是個知識淵博的婦女。
句型12
It is +段時間+since+主語+did. 請比較：
It was +段時間+since+主語+had done. 如：
It is five years since he left here.他已經離開這兒五年了。
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.他從這兒搬走已經有五年了。
句型13
It +謂語+段時間+before+主語+謂語.( before引導的是時間狀語從句。) 如：
It wasn’t long before the people in that country rose up.沒有多久那個國家的人民就起義了。
It will be three hours before he comes back.三個小時之后他才能回來。
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 +(心理品質方面的)形容詞+of + sb. +to do.= 主語+ 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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