2024届高考英语主语从句课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Noun clauses as,the subject,主语从句,Revision,Find the subjects in the following sentences.,1.A tree has been cut down.,2.You are a student.,3.To study English well can be difficult.,4.Smoking is harmful to our health.,5.What she said is not yet known.,思考：什么是主语从句？,1.,定义：,主语从句,是,在复合句中充当,主语的从句,。,1.,Whose,watch was lost is unknown.,2.,Whatever,you did is right.,3.,who,will host the meeting hasnt been decided.,4.,What,you said just now is not true.,找一找,主语从句,主语从句,2.,引导词,连词,that,whether,（不作成分）,连接代词,who(ever),whom(ever,),which(ever),what(ever),whose,（主、宾、表、定）,连接副词,where,when,why,how,（状语）,划出从句，标出引导词在从句作何种成分,(,不作成分）？,That,China will become stronger is certain.,Whether,life exists on other planets is not clear,who,will host the meeting hasnt been decided.,What,you said just now is not true.,Whose,car runs faster is obvious.,Where,she is from is unknown,How,the accident happened is not clear,主,宾,定,地点状语,方式状语,如何选用引导词？,Complete the sentences using,what,whether,where,when,，,who,why,how,or,that,.,1._,is needed for success,is,your hard work.,2._,we need more practice,is,quite obvious.,3._,can join in the sport meet,is,decided by the teacher.,4._,it will rain or not,is,not clear.,What,That,Who,Whether,5.,_,the earth is becoming warm,is,a good topic for research.,Why,1,主语从句作主语时，谓语动词一般用,单数,形式。,Conclusion:,但是，由,what,引导的主语从句后谓语动词的数要根据,句意,而定,What,I need,is,money.,What,I need,are,books.,2,连词,That,位于句首不能省略,1.That he will refuse this piece of advice is impossible.,2.That they should like each other,is natural.,_,It,is impossible,that,he will refuse this piece of advice.,It,is natural,that,they should like each other.,注意,:,由,that,引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用,it,作,形式主语,而把从句放在后面。,3.,用,it,作形式主语的主语从句,It,is,+,adj,+that.,It,is,+,n,+,that.,It,is,+,过去分词,+that.,It+happened that,.,碰巧,It+seems that.,似乎,很明显，那个女孩在说谎,很遗憾你不能和我们一起去,据说他去过美国,It is obvious that the girl is telling lies.,注意事项,whether,与,if,均为“,是否,”,1.,在用,it,作形式主语的主语从句中，,if,可以和,whether,替换,2.,引导,主语从句并放在句首,、及引导,表语从句、或者后面有,or not,或作介词宾语,时，,只能用,whether,，不能用,if,1.It is not decided yet,they will sell the house.,2.,he will come is not clear,3.The question is,hell come,Im not sure about,well win.,whether(if),whether,whether,whether,Thats all.,See you!,