必修3-unit3-表语从句.docx

表语从句【教学内容】表语从句【教学目标】熟练掌握表语从句的用法【教学重难点】连接词的使用【教学过程】什么是表语从句：在句中作表语的从句称为表语从句。能引导宾语从句的连词皆可引导表语从句。例：1.She is a girl.The question is who are you.（整个句子作表语)▼表语从句的连接词引导表语从句的连接词主要有以下几类：从属连词引导表语从句的从属连词有that和whether.that和whether在表语从句中不作任何成分，that无具体意义，whether仍有“是否”的意义。→The reason for your mistake is (that) you lack confidence in yourself.你犯错误的原因是你本身缺乏信心。→The question is whether we can reduce the cost of the product.问题是我们能否降低产品的成本。注：一般不用if引导表语从句。连接代词引导表语从句的连接代词主要有who(ever),whom(ever),whose(ever),what(ever),which(ever)等→This is what I am interested in.这就是我所感兴趣的。→The doubt is who has got away with the document.疑点就是谁拿走了文件。→Actually,girls can be whatever they want to be just like boys, whether it is a pilot, an astronaut, or a manager. 实际上，女孩可以和男孩一样想从事什么职业就从事什么职业——不管是飞行员、宇航员还是总经理。连接副词引导表语从句的连接副词主要有when(ever),where(ver),why,how(ever)等→That was where we can camped last time.那就是上次我们野营的地方。→The question is however we can do the work better.问题是我们究竟如何才能将这项工作做得更好。→What I wonder is when he left.我想知道他是何时离开的。→That is why he didn’t come here.那就是他没到这儿来的原因。其他连接词另外，because, as if, as though, as, like等连接词也可引导表语从句。→He has heart disease. That is because he has been smoking too much.他有心胀病，那是因为他抽烟太多了。→She seems as if she had done a great thing.她看起来好像做了一件大事。→Things are not always as they seem to be.事物并不总是如其表象。【牛刀小试】填入适当的连接词My question is who left.That is what he want.This is where they once lived.My question is whether he left or not.It’s just becausehe doesn’t know her.He looks as ifhe’s tired.The truth is that I didn’t go there.▼be+表语从句最常见的表语从句形式就是“连系动词be+表语从句”→My question is however we can find such a plant in this forest.我的问题是我们研究如何才能在这片森林中找到这种植物。→The reason for his being absent from the conference was that he was delayed by the accident.他没来开会的原因是他被一场事故耽误了。→This is how we got out of trouble then.这就是当时我们如何脱离困境的。▼其他连系动词+表语从句除be以外，可用于表语从句的连系动词还有seem,look,appear,sound,taste,feel,remain等→It looks as if it is going to rain.看来要下雨了。→It sounds as if you are from the south of the States.听起来你好像来自美国南部。【活学活用】