表语从用法1. 定义：用作表语的从句叫做表语从句2. 引导表语的从句的关联词的种类（1）从属连词 that。 The trouble is that I have lost his address。The reason was that he was late for school.(2）从属连词 whether， as, as if He looked just as he had lookedten years before。The question is whether they will be able to help us.注:从属连词 if 一般不用来引导表语从句,但 as if 却可引导表语从句.All this was over twenty years ago, but it’s as if it was only yesterday.The key is whether we can solve the problem.It looked as if it was going to rain.注：能跟表语从句的谓语动词一般为系动词 be, seem, look， sound等He looked just as he had looked ten years before。It sounds as if someone is knocking at the door。（ 3) 连 接 代 词 who ， whom ， whose, what, which ， whoever ， whatever， whichever 在表语从句中做主语、宾语等。The problem is who we can get to replace her。That was what she did this morning on reaching the agreement.My question is who left.(4) 连接副词 where, when, how, whyWhat I wonder is when he left. This is where they once lived。That is why he didn’t come here。The question is how he did it。(5） 连词 because 可引导表语从句。注意：because 可引导表语从句，但与之同义的 since, as, for 等不用于引导表语从句。I think it is because you are doing too much。It's just because he doesn’t know her。 That's because he didn’t understand me.(That’s because…强调原因)That’s why he got angry with me。(That's why…强调结果）注意:在一些表示“建议，劝说，命令”的名词后面的表语从句中，谓语动词用虚拟语气。 Should+动词原形表示,should 可省略。My suggestion is that we (should） start early tomorrow。一坚持(insisit）二命令(command, order）三建议（suggest， advise, propose）四要求（desire, demand， require, request)四．注意事项（重点看）1。 表语从句要用陈述语序。That...
