2020高考英语考前冲刺Ⅱ专题09 名词性从句突破

2020考前冲刺英语专题09 名词性从句突破 1. Before a problem can be solved, it must be obvious _ the problem itself is. (2020湖南卷31)A. what B. thatC. which D. why【解析】选A。空白处后句子缺表语。因此不能选B。B中的that 只起引导作用，无实意。而该句选what既起了引导作用，又作了句子成分表语。2. It is still under discussion _ the old bus station should be replaced with a modern hotel or not. (2020重庆卷22)A. whether B. whenC. which D. whereA. that when B. that ifC. if when D. when if【解析】选B。that引导一个宾语从句，宾语从句中又有一个由if引导的条件状语从句。1. that引导名词性从句时既无词义也不在从句中作任何成分。2. that引导主语从句、表语从句、同位语从句时一般不可省，引导宾语从句时常可省。但是， and连接两个由that引导的宾语从句时，第一个that可省，第二个that不可省。3. that从句一般不作介词的宾语。但： in that “因为”， except / but that“除了”例外。考点3.whether, if的用法Its reported that Pakistan is considering _ to continue its information cooperation with the US because the US didnt inform them in advance before they took action to kill Bin Laden. (2020成都七中高三最后一套模拟卷)A. what B. how C. whether D. if【解析】选C。在 whether后只能用不定式或后接or not，不能接if，即whether to do 或whether or not。whether, if引导名词性从句时，表示“是否”， 不在从句中作任何成分，二者常可通用，但在下面几种情况下一般只用whether:(1)引导主语从句。(2)引导表语从句。(3)引导同位语从句。(4)在动词discuss之后。(5)在介词之后。(6)后面紧跟or not。(7)动词不定式前。考点4.名词性从句的语序I really wonder _ will stop Japan from its annual whale hunt in the Antarctic.A. that it is what B. what it is thatC. what is it that D. that is it what1. 在名词性从句中，that只起连接主句和从句的作用，在从句中不充当任何成分，本身也没有词义，即从句中不缺少任何成分时用连词that.2. that在从句中作主语时通常用it作形式主语，而将that从句置于句末作真正的主语。但what不能用it作形式主语。3. that可引导同位语从句，但what不能。考点6.由reason作主语时，表语从句的连接词The reason why he cant go to school is _ he is ill.A. because B. whyC. that D. which【解析】选C。reason作主语时，其后的表语从句一般用连词that。reason作主语时，表语从句所用连词为that, 一般不用because或why等。考点7. that引导同位语从句和定语从句的区别例1：_ was known to all that William had broken his promise _ he would never play computer games again.A. As; which B. As; thatC. It; that D. What; that专题训练()1. Why dont you bring _ to his attention that you are too busy to do it?Athis Bthat Cit Dwhat()2. The fact _ he didnt see Lao Li yesterday is true.Awhich Bthat Cwhen Dwhat()3. The book looks _ it had been out in the rain.Athat Bwhether Cas though Dwhat()4. I have no idea _ he will come back.Awhere Bwhen Cwhat Dthat()5. _ the old mans sons wanted to know was _ the gold had been hidden.AThat; what BWhat; where CWhat; that DWhat; if()6. What the doctors really doubt is_ my mother will recover from the serious illness soon.Awhen Bhow Cwhether Dwhy()7. Our hometown is quite different from _ before.Athat it was Bwhat it was Cwhich it was Dwhen it was()8. Someone is knocking at the door. Go and see_.Awho is he Bwho he is Cwho is it Dwho it is()9._surprised us very much that Tom should have left without a word.Ahe BIt CThis DThat()10. Some college students are seen doing _ work they can find to support themselves.Athat Bwhich Cwhatever Dno matter what()11. Things were not _ they had been before.Aas Bbecause Cthat Dwhen()12. After_ seemed an endless effort，the patient was finally able to carry out_ seemed a perfectly normal walk.A. what；what Bthat; that Cit; that Dwhich; like()13.