同位语从句
1 The fact that the money has gone does not mean it was stolen.
2 Have you heard the news that Mary is going to have a baby.
3 Where did you get the idea that I could not come.
重要考点
Wh-诸词一般不引导同位语从句
大多由从属连词that 连接，但that不充当成分.
先行词多为news, idea, fact, doubt, evidence, promise, rumor, hope, truth, belief, message等抽象名词。
起到解释说明的作用
定语从句
分类
限定性定语从句：一般紧接在所修饰的名词后，描写主句所涉及的人或物的具体情况，是主句不可缺少的一部分。
非限定性定语从句：为主句所描写的人或物提供一些附加情况，没有它，主句意义仍然完整。位于所修饰的名词之后，用逗号与主句分开。
关系代词的选用
限定性定语从句
The man who robbed the bank has been arrested.
The woman( whom/who/that) I told you about came back yesterday.
The VCD (which) I bought yesterday broke down.
That’s the man whose house has been burnt down.
That was the year when he was born.
Let’s meet at the gate where you can see the panda.
Can you tell me the reason why you are late
非限定性定语从句
You can talk to Mr. Thomson, who is now in his office.
He introduced me to his wife, whom I hadn’t met before.
His house, which he bought for $10,000 ten years ago, is now worth $ 35,000.
He was very nervous during his first job interview, which was understandable.
We will discuss the problem tomorrow, when you calm down.
He lived in an attic in an old house, where he had a good view of the city.