1.It is / was+被强调的部分+that(who)+剩余的部分.如: It wasn’t until he came back that I went to bed.直到他回来我才睡觉。(一定要注意被强调句型谓语动词否定的转移,及形式)。 It was because he was ill that he didn’t come to school today.只因为他有病了今天没有来上学。(只能用because而不能用for, as 或since) It is I who am a student. 我确实是个学生。(句中am不能用are来代替。) 2.It is high time (time/ about time) (that) 主语+should do / did+其它。(注意从句中的谓语动词用的是虚拟语气) It is high time that we should go / went home.我们该回家了。 3.It is / was said ( reported…)+that+从句. 如: It was said that he had read this novel.据说他读过这篇小说。=He was said to have read this novel. 4.It is impossible / necessary/ strange…that clause.(从句中的谓语用should+do / should have done,其形式是虚拟语气。)如: It is strange that he should have failed in this exam.真奇怪,他这次考试没有及格。 5.It is + a pity/ a shame…that clause.(注意从句中的谓语动词用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. 他直到电影结束才回来。他没有看到这部电影真可惜。 6.It is suggested / ordered/ commanded /…that +clause.(从句的谓语动词用should do, 但should可以省略。)如: It is suggested that the meeting should be put off.有人建议推迟会议。 7.It is/was+表示地点的名词+where+从句。(注意本句不是强调句型,而是以where引导的定语从句。)如: It was this house where I was born.请比较:It was in this house that I was born. (后一句是强调句型。) 8.It is / was +表示时间的名词+when+从句。(注意本句型也不是强调句型,而是以when引导的定语从句。)如: It was 1999 when he came back from the United States. 请比较:It was in 1999 that he came back from the United States. 9.It is well-known that+从句。如: It is well-known that she is a learned woman. 10.It is +段时间+since+主语+did. 请比较: It was +段时间+since+主语+had done. 如: It is five years since he left here.他已经离开这儿五年了。 It was five years since he left here.(同上) 11.It is +形容词+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。 It is +(心理品质方面的)形容词+of + sb. + to do. = 主语+ be +形容词+to do.(常用的形容词有:kind, stupid; foolish, good, wise等。)如: It is kind of you to help me.=You are kind to help me.你真好给我提供了帮助。 12.It is/was not until…that
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