高中英语语法主语从句第一节主语从句1．考点解析。

1．主语从句一般分为三类：由what等代词引导的主语从句；由连词that 引导主语从句，多数情况下由it作形式主语，that从句放到句子后面去；由连接代词或连接副词（或whether）引导的主语从句。

What they are after is beauty.It is not your fault that we can’t arrive on time.When they will arrive has not been decided.2. 由关系代词what引导的主语从句，也可由whatever（“所…的一切”）或 whoever（“一切…的人”）引导。

Whatever he wants is your support.Whoever comes will be welcome.3. 大多数主语从句都可用it代替，作形式主语，把主语从句放在句尾。

要注意it代替主语从句和it引导的强调句的区别。

强调句的结构是it is/was….+that…，强调人是可把that 换做who，whom，whose。

如强调的是状语时，也只能用that,而不能用when, where, how, why等。

It was in Paris that they fell in love with each other.It is the lady who was my English teacher.It was last semester that he won the first prize.2. 试题详解。

1．______ he needs is more experience.A. WhoB. ThatC. WhatD. How2.It was because of the heavy snow ______ the train was late.A. whyB. thatC. soD. thus3．It doesn’t matter ______ he likes or not.A. whetherB. whatC. whenD. that4______ he has won the Noble Prize has been proved to be true.A. WhatB. HowC. ItD. That5．What he wants _______ to sleep more.A. areB. have beenC. isD. were6．______ we can begin this investigation is still a question.A. WhenB. WhyC. WhatD. That7．It is ______ that the highway will be open to traffic nest year.A. reportB. reportedC. reportingD. by report8．______ fails to see this will make a big mistake.A. WhateverB. whatC. whereverD. Whoever9．It is a mystery _____ the prisoner escaped.A. whyB. howC. whatD. that10．It was last summer _____ he graduated from the college.A. thatB. whenC. /D. where3. 实战演练。

1. We didn’t know ______ she didn’t come.A. whyB. thatC. whenD. it2. It is still doubtful _______ she would play the part.3. _____ is estimated that a round-trip to Mars would take more than a year.A. ItB. WhatC. WhyD. That4. How _________ to do it is still a question.A. is he goingB. he is goingC. isn’t he goingD. he going5. ______ evidence that language-acquiring ability must be stimulated.A. It isB. There beingC. It beingD. There is6. ______ she is still alive is sheer luck.A. ThatB. WhatC. ItD. If7. ______ you have said is convincing.A. ThatB. WhatC. ItD. Whether8. ______ will chair the meeting has not yet been decided.A. ThatB. WhoC. WhatD. Why9. ______ did it should admit it frankly.A. ThatB. WhoC. WhatD. Whoever.10. _________ is none of your business.A. When she goesB. Where she goesC. Where did she goD. Where she went11. ______ John will go remains a secret.A. WhatB. WhetherC. WhenD. If12. ______ makes mistakes must correct them.A. WhoeverB. WhatC. ThatD. Whatever13. ______ was not our concern.A. No matter how he might pass the examination or notB. Though he might pass the examinationC. Whether he passed the examination or notD. While he pass the examination14. “ What is that building?”“_____ the garden equipment is stored.”A. There’s in whichB. That’s whereC. The building thatD. That’s the building which15. I doubt _______ it is true.A. whatB. whoC. whichD. whether16. It was yesterday _____ he met your sister in the zoo.A. whenB. thatC. whereD. what17. It was XiaoYang _____ did it.A. whomB. thatC. whatD. who18. It was not until yesterday _______ I got your letter.A. thatB. whatC. whetherD. which19. It is she _______ you should ask.A. whoB. whomC. whoseD. that20. Who was it _____ called this morning?A. whoB. whichC. thatD. why21. ______ was it that you had the get-together with your classmates?A. WhatB. WhoC. WhenD. It22. ______ was it _____ her work was still not as good as she wanted it to be?A. Why…thatB. When….thatC. What…whichD. It…why23. It is this building _____ we have lived in for seven years.24. It is this lady _____ father was our ex-president.A. whoseB. thatC. whoD. whom25. It is the people, not things, ______ are decisive.A. whichB. whoC. thatD. what。