3.as if (as though)引导的表语从句

　as if (as though) 引导表语从句，意思是"好像，似乎"。

　E.g. It looks as if it is going to rain.看起来天要下雨了。

　E.g. It sounds as if you are from the South of the USA.听起来你好像来自美国南部。

注意：不用 if 引导表语从句。reason做主语时，表语从句应由that引导，不用because。that 引导表语从句时，通常不能省略。

4.其他类型的表语从句

其他连接词引导表语从句的用法与引导宾语从句的用法类似。但要注意几个表示原因的表语从句的常见句型：

（1）That's why ...

（2）That's because...

（3）The reason why... is that...

E.g. That's why we decided to put off the sports meeting.

E.g. That's because we haven't got well prepared.

E.g. The reason why I like the dictionary is that it is useful for my work.

1.（2014浙江）"Every time you eat a sweet, drink green tea." This is ________my mother used to tell me.

A. what B. how C. that D. whether

解析：根据句意"每次你吃糖果的时候，喝点绿茶。"这就是我妈妈过去常常告诉我的。根据句意可知，设空处引导表语从句，引导词在句中作宾语，因此用what引导

答案：A。

2.(2014江苏)---What a mess! You are always so lazy!

---I'm not to blame, mum. I am________ you have made me.

A. how B. what C. that D. who

解析：根据句意"---真是太乱了！你总是这么懒惰！---妈妈，别责怪我。你使我成为了现在这个样子。"本题考查表语从句。What引导表语从句，且what在句子中作made的宾语补足语。

答案：B。

3.(2014山东)It is difficult for us to image ________ life was like for slaves in the ancient world.

A. where B. what C. which D. why

解析：根据句意"我们很难想象古代奴隶们的生活是什么样子的。"此题考查宾语从句。在该空引导的宾语从句中介词like后面缺少宾语且设空处表示"事物"，所以用what引导宾语从句。Which表示在一定范围内进行选择，在此处不符合题意，故排除C项。

答案：B。

4.(2014福建)Pick yourself up. Courage is doing ________ you are afraid to do.

A. that B. what C. how D. whether

解析：根据句意"振作起来，勇气就是去做你害怕去做的事情。"本题考查宾语从句。分析题干可