高中英语主要句型.doc

1、 (so) happened（chanced） that +clause. = sb. happened /chanced to do sth. =sb.did sth. by chance.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（还有动词appear等可这样使用）如: It seemed that he had been to Beijing before.他好象以前去过北京。He seemed to have been to Beijing before3、 It is / was被强调的部分that(who)+剩余的部分4、 It is high time (time/ about time)+ (that) 主语should do / did+其它。（从句中的谓语动词用的是虚拟语气。）5、 It is / was said ( reported)that+从句.6、 It is impossible / necessary/ strangethat clause.(从句中的谓语用shoulddo / should have done，其形式是虚拟语气。)7、 It is + a pity/ a shamethat 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。)8、 It is suggested / ordered/ commanded /that +clause.(从句的谓语动词用should do, 但should可以省略。)9、 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。）10、 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。）11、 It is well-known that从句。12、 It is +段时间since+主语did. 请比较： It was +段时间since+主语had done.13、 It +谓语段时间before+主语谓语.（ before引导的是时间状语从句。）14、 It is +形容词(possible, impossible, necessary等) for+ sb.+ to do15、 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。)16、 由as引导的非限定性的定语从句。如： As we have known, he is a most good student.17、 No matter what / which / who / where / when / whose从句，主句.(注意从句中的时态一般情况下用一般现在时态。)18、 When / So long as / As long as / Once +从句，主句。（从句也可以放在主句之后。）19、 As soon as / Immediately / Directly / Instantly / The moment / The instant / The minute +从句，主句.20、 No sooner +had + 主语donethan +主语did. 如： No sooner had I got to Beijing than I called you.我一到北京就给你打电话了。21、 Hardly/Scarcely/ Rarely +had +主语donewhen / before +