分句 Mary was a good girl, but she had one shortcoming.

从属连词 引导： 状语从句 I'll do it as you told me.

You will be late unless you hurry.

连接代词和连接副词 主语从句 What he said proved true.

When we'll start has not been decided yet.

表语从句 This is why he didn't come yesterday.

That is where he lives.

宾语从句 The man asked me which I liked best.

I can't understand why she is so late.

关系代词和关系副词 定语从句 Nicotine is a drug that gets one into the habit of smoking.

He came last night when I was out.

(二) 正误辨析

［误］ Both my parents are not here. They went to the concert just now.

［正］ Neither of my parents is here. They went to the concert just now.

［析］ 在英语中both一般用于肯定句中，如用于否定句中，其意义也不同于汉语，如：Both of us are not right. 在英语中应被理解为"我们俩不都对。"而Neither of us is right。 才能被理解为"我们俩无一正确"。