重庆市万州分水中学高中英语必修三《Unit 3 The Million Pound Bank-Note 语法探究clauses and use them freely课前自学（ SB P20-21 Discovering useful structures）语法知识精讲1．表语从句在复合句中作主句的表语。引导表语从句的连接词有：that ,whether, as if（仿佛）；连接代词有 who, whose, what, which,连接副词有 when, where, how, why 等。另外 as, because，也可引导表语从句。表语从句位于连系动词后，有时用 as if引导。其基本结构为：主语+系动词+从句。常见的表语从句的句型有This is because…The reason for …(why) is that…He\ She looks as if …The trouble\problem is that…例如:The fact is that we have lost the game. 事实上我们已经输了这场比赛。His suggestion is that no one (shoul d )be allowed to smoke in the office.他的建议是办公室不许吸烟。Her trouble is that she doesn’t know how to improve her teaching work.他的苦恼是不知道怎样来改进教学工作。That’s just what I want. 这正是我想要的。This is where our problem lies. 这就是我们的问题所在。That is why he didn’t come to the meeting. 那就是他为什么不到会的原因。It looks as if it is going to rain. 看上去天要下雨了。注意：当主语是 reason 时，表语从句要用 that 引导而不是 because。例如：The reason why he was late was that he missed the train by one minute this morning.他迟到的原因是因早上差一分钟没赶上火车。2．名词性从句用作宾语叫宾语从句。引导宾语从句的关联词与引导主语从句、表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。(1)由连接词 that 引导的宾语从句 由连接词 that 引导宾语从句时，that 在句中不充当任何成分，在口语或非正式的文体中常被省去；但从句是并列句时，第二个分句前的 that 不可省。例如：He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。We must never think (that) we are good in eve ry thing while others are good in nothing.我们决不能认为自己什么都好，别人什么都不好。He said (that) he had eaten nothing but...
