从属结构之从句篇.pptVIP

名词从句 名词从句中的从属连词在从句里不担任任何成分，只起连接的作用；而关系代词和关系副词不仅仅是起连接的作用，而且还在从句里担任一定的成分;关系代词常在从句中担任主语、宾语或表语等成分；关系副词常在从句中担任状语。 另外，在使用上面的这些关系词时，有几个问题值得我们注意：首先，只能用whether而不能用if的情况. 1）引导主语从句，例如： Whether well make a loan for the project has not been decided （正确） OR: It has not been decided whether well make a loan for the project . （ 正确） If well make a loan for the project has not been decided .（错误） OR: It has not been decided if well make a loan for the project . （错误） 2）作介词的宾语， I have no idea about whether I can raise the money for buying a car . （正确） 我不知道我是否能为买车筹措到资金。 I have no idea about if I can raise the money for buying a car . （错误） 3）后接不定式 He didn‘t know whether to go all himself first or wait for her here.(正确) He didnt know if to go all himself or wait for her here . （错误） 4）后接or not We wonder whether theyll come in time or not.(正确) 我们担心他们会不会准时到。 We wonder if theyll come in time or not . （错误） 其次，what引导的名词从句表达的意思是……所……的。这个所怎么的定义根据从句谓语的动作意义而定。 I dont understand what you said. What he needs is to practice more. Money is what she is really after. People have different ideas about what happiness means . 最后，要了解 -ever = no matter ，用于表示强调，意为无论……。也就是说： whatever = no matter what（无论什么） whoever = no matter who（无论谁） whichever = no matter which（无论那个） whenever =no matter when （无论何时） wherever = no matter where（无论何地） however = no matter how （无论怎样） A 主语从句 Whether hell come or not remains a question . 他是否会来依然是一个问题。 Whoever says that is not allowed . 无论谁这样说都是不允许的。 That she reads English aloud every morning helps her a lot in the improvement of her English study . 要点提示在使用主语从句中，有几个问题值得我们注意： 1）尽管主从连词that在主语从句中没有任何意义,但一般不能省略。 That there is no elevator in the building is the critical inconvenience . 这幢楼里没有电梯是极大的不便之处。 It is necessary (that) he have his further study in college.(当主语从句在后面时，连词that可以省去)他在大学进一步深造是完全必要的。 2）为了保持句子平衡或在正式文体中,常用先行It代替主语从句而将主语从句置于句末。 It remains a question whether hell come or not . 他是否会来，依然是一个问题。 It is not allowed whoever says that. 无论谁这样说都是不允许的。 3）在It + be +形容词/