表语从句
一．定义给我的孩子们：表语从句就是用一个1克拉钻石句子作为表语。说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语
二．收短信引导表语从句的关联词的种类：
(1)从属连词that。在从句中不做成分。
吉林省的大学如：The trouble is that I have lost his address.
麻烦是我把他的地址丢了。
The reason was that he was late for school.
原因是他上学迟到了
(2)从属连词whether, as, as if。
如：1. He looked just as he had looked ten years before. 他看起来还与十年前一样。
2. The question is whether they will be able to help us. 问题是他们是否能帮我们。
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）。
如：All this was over twenty years ago, but it’s as if it was only yesterday.
这都是20多年前的事了，但宛如昨天一样。
The key is whether we can solve the problem.
关键是我们是否能解决问题。
注：（能跟表语从句的谓语动词一般为系动词be, em, look，sound等）。
如：He looked just as he had looked ten years before.
他看起来还与十年前一样。
It sounds as if someone is knocking at the door.
听起来好像有人在敲门。
(3)连接代词who, whom, who, what, which, whoever, whatever, whichever在表语从句中做主语、宾语等。如：The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。 That was what she did this morning on reaching the attic. 那就是她今晨上了阁楼干的。
The problem is who we can get to replace her.
问题是我们能找到谁去替换她呢
My question is who left.
我想问的是谁离开了。
(4)连接副词 where, when, how, why。
如：What I wonder is when he left.
我想知道他是何时离开的。
This is where they once lived.
这就是他们曾经住过的地方。新鲜竹笋
That is why he didn't come here.
这就是他为何没到这儿来的原因。 The question is how he did it.
问题是他是如何做此事的。
(5)连词becau可引导表语从句。
如：I think it is becau you are doing too much.
我想这是因为你做得太多。
It's just becau he doesn't know her.
这是仅仅因为他不认识她。
That's becau he didn't understand me.
那是因为他没有理解我。 (That'强调原因)
That's why he got angry with me.
那正是他对我生气的原因。 (That'强调结果)
(6)解释：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。
如：My suggestion is that we (should) start early tomorrow. 我的建议是我们明天一早就出发。
三．系动词分类:打乒乓球视频
1、分为两大类：完全系动词（其后只能跟表语的动词，如be, em）和半系动词（其后既可跟表语作系动词用法，也可跟宾语或状语作实义动词用，如look）
eg：1. He looked sadly at the boy.(“看着”，实义动词用法)
2 .He looks a clever boy .（“看起来”，系动词用法）
3. He looks at a clever boy.（“看着”，实义动词用法）
在英语中，某一动词是多义词，既有实义动词用法，又有系动词用法。
分为四类：A．五大感官系动词 B．状态系动词C．动态系动词 D．双谓语系动词
A．五大感官系动词，描述一种感官性质。由实义感官动词变化而来，都是半系动词。
听风听雨1．look“看起来像是”，后接adj.、n.、分词、介词短语、不定式等。
The girl bit her lips and looked thoughtful.
这位女孩咬着嘴唇，看上去若有所思。
2．smell“闻起来”，后接adj.分词。
The flowers smell sweet.
这些花气味真香。
3．sound“听起来”，后接adj.分词。
The music sounds sweet.
这首诗听起来真悦耳。
4．taste“尝起来”，后接adj.分词。
The apples taste very good.
这些苹果很好吃。
5．Feel ①“摸起来，给……感觉”；
②“觉得”，后接adj.p.p.
eg：You will feel better after a night’s sleep.
平移与平行睡上一晚，你会觉得好些。
B．状态系动词：
1．be，“是”，属完全系动词。 I am a student. 我是一个学生。
2．em,“似乎，好像”，完全系动词。 They em quite happy. 他们似乎很快乐。
