(3)由that引导的定语从句:that在定语从句中可以指人或物,在从句中作主语,谓语动词或介词的宾语。(但不能放在介词后面作介词宾语。)例如:The letter that I received was from my father.注意在下面几种情况下必须用that引导定语从句:
①先行词是不定代词all,few,little,much,something,nothing,anything等。例如:
All that we have to do is to practise every day.
②先行词被序数词或形容词最高级所修饰。例如:
The first lesson that I learned will never be forgotten.
This is the best film that I've ever seen.
③先行词被all,any,every,each,few,little,no,some等修饰。例如:
I have read all the books (that) you gave me.
④先行词被the only,the very,the same,the last修饰时。例如:
He is the only person that I want to talk to.
⑤先行词既有人又有物时。例如:
They talked of things and persons that they remembered.
⑥当句中已有who时,为避免重复。例如:Who is the man that is talking to John.
⑦用作关系代词,修饰表示时间的名词如day,time,moment等,代替when。例如:
It happened on the day that/when I was born.
⑧如有两个定语从句,其中一个关系词已用,则另一个用that。例如:
Edison built up a factory which produced things that had never been seen before.
