名词性从句考点分析.doc

名词性从句考点分析考点一、引导词 what(ever)，that，which (ever) 等的区别(一)连接代词或副词的选择，常可根据句意即可选出。(二)引导名词性从句时，what充当主语、宾语、定语或表语等成分；that不作任何成分，而只在语法上起连接作用。(三) which(ever) 引导名词性从句表示在一定的范围内加以选择；what(ever)没有一定的范围。 【考例1】 Jerry did not regret giving the comment but felt _ he could have expressed it differently. (2012北京)A. why B. how C. that D. whether【考例2】 It is not always easy for the public to see _ use a new invention can be of to human life. (2011重庆)A. whose B. what C. which D. that【考例3】 _ one of you breaks the window will have to pay for it. (2013江西)A. Whoever B. Whatever C. Whichever D. Wherever 考点二、引导词 whether 和 if 的区别【考例】 We havent settled the question of _ it is necessary for him to study abroad. (2006江苏)A. ifB. where C. whether D. thatwhether与if的区别大致如下：1. whether和if均可用来引导主语从句，但if引导的从句不能位于句首。2. whether和if均可用来引导宾语从句，但当强调宾语从句并将其提前时只能用whether。如: Whether I have read the book or not, I cant remember. 3. 引导介词宾语时只用whether不用if。4. 引导表语从句用whether而不用if。5. 引导同位语从句用whether而不用if。6. 在动词不定式之前，只能用whether，不能用if。7. if除了表示“是否”，还可以表示“如果”；而whether只能表示“是否”。8. if和whether都可以与or not连用，但if与or not之间需用词语隔开，而whether则不受此限制。如: Please tell me whether or not you agree. I dont know whether/if he will come or not.考点三、名词性从句的语序【考例】 When changing lanes, a driver should use his turning signal to let other drivers know _. (2010上海) A. he is entering which lane B. which lane he is enteringC. is he entering which lane D. which lane is he entering考点四、who / whoever, what / whatever等的区别带有ever的连接代词/副词表任意性或随意性，意为“无论”。【考例】 We promise _ attends the party a chance to have a photo taken with the movie star. (2012福建)A. who B. whom C. whoever D. whomever考点五、where，when，why, how等连接副词引导的名词性从句where，when，why, how等连接副词也可以引导名词性从句，使用的关键是：这个词必须符合句子的逻辑要求。【考例】 Scientists study _ human brains work to make computers. (2012四川)A. when B. how C. that D. whether考点六、it作形式主语或形式宾语 【考例】 Everyone in the village is very friendly. It doesnt matter _ you have lived there for a short or a long time. (2012湖南)A. why B. how C. whether D. when