形容词做定语和从句做定语

在英文中我们可以用形容词或其他词类或非谓语动词修饰一名词，如I dont like impatient guys. Over two million people suffered from the blackout in New York. Those under 17 are not allowed to see the movie. Do you the number of foreign guests coming to the surprise party? 但是要表达更为复杂的意思，简单用形容词无法搞定，我们要用一个句子才行，这种句子来修饰名词，做定语。

一、定语从句中的基本概念。

1)定语从句：修饰名词或代词的`从句叫定语从句。

2)先行词：位置在定语从句前，被定语从句修饰或限制的对象叫先行词。现在我们来全面理解先行词：

① 先行词可以不只是一个词。尽管我们他这个对象称为先行词，但它不一定就是一个词，它可以是：

A.一个词

The woman who lives next door is a famous singer.

He who hesitates is lost.

B.短语

He likes climbing mountains, which is a good exercise.

C.一个分句

He said that he had no time, which is not true.

D.一个完整句子

He arrived an hour later, which annoyed his girlfriend very much.

My girlfriend likes chatting online with other guys, which really drives me crazy.