SAT语法基础之名词性从句

　　宾语从句（The Object Clause）

　　据留学360介绍，在句子中起宾语作用的从句叫做宾语从句。宾语从句的引导词和主语从句的引导词相同。宾语从句可以作及物动词的宾语，作短语动词的宾语，介词的宾语。

　　宾语从句：及物动词的宾语

　　Everybody knows that money doesn‘t grow on trees.

　　宾语从句：短语动词的宾语

　　Please go and find out when the train will arrive.

　　宾语从句：介词的宾语

　　I am interested in what she is doing.

　　宾语从句：否定的转移

　　I don’t suppose you‘re used to this diet.

　　我想你不习惯这种饮食。

　　I don’t believe she‘ll arrive before 8.

　　我相信她8点之前不会到。

　　表语从句（The Predicative Clause）

　　在句子中起表语作用的从句叫做表语从句。表语从句的引导词和主语从句的引导词相同。 　　What the police want to know is when you entered the room.

　　This is what we should do.

　　That’s why I want you to work there.

　　as if, as though, because也可用来引导表语从句。

　　She seems as if she had done a great thing.

　　It is because you eat too much.

　　虚拟语气：表语从句

　　主语是idea, notion, proposal, suggestion, request等名词时,作表语从句的动词为原形动词或should+原形动词。

　　My suggestion is that we (should) go and help him.

　　Our only request is that this should be settled as soon as possible.

　　同位语从句（The Appositive Clause）

　　一般跟在某些名词如answer(答案)，hope(希望)，fact(事实)，belief (信仰)，news(消息)，idea(主意；观念)，promise(承诺)，information(信息)，conclusion(结论)，order(命令)， suggestion(建议)，problem(问题)，thought (想法)等后面。例如：

　　I had no idea that you were here. 　　She told us her hope that she would become a pianist.

　　He made a promise that he would never come late.

　　同位语从句：whether

　　whether可以引导同位语从句，而定语从句不能用whether作为引导词。

　　He hasn’t made the decision whether he will go there.

　　I have small doubt whether he is suitable for the job.

　　同位语从句：what

　　what可以引导同位语从句，而定语从句不能用what作为引导词

　　I have no idea what he is doing now.

　　同位语从句：how

　　how可以引导同位语从句，而定语从句不能用how作为引导词

　　It’s a question how he did it