限制性定語從句中，關係代詞只用that 不用which的情況：
①先行詞為不定代詞anything, nothing, something, everything, all, some, none, little, few, the one等時。
I refuse to accept the blame for something that was someone else’s fault.
我拒絕接受因別人的錯誤而對我進行的指責。
②先行詞是形容詞最高階或序數詞，或先行詞前有形容詞最高階或序數詞修飾時。
The first place that they visited in Guilin was Elephant Trunk Hill.
他們在桂林參觀的第一個地方是象鼻山。
The only part of the meal that I really liked was the dessert.
這頓飯只有甜點是我真正愛吃的。
④先行詞中既有表示人又有表示物的名詞時。
They will never forget the things and persons that they’ve seen or heard of during their long journey.
他們將永遠不會忘記在他們的長途旅行中見到或聽說過的人和事。
(3)關係詞只用which而不用that的情況：
①關係詞引導非限制性定語從句時。
The boy was away from home for a week, which worried his parents very much.
這個男孩離家一個星期了，這使他父母很擔心。
②當從句中的介詞提前，構成“介詞＋關係代詞”結構時。
We live in an age in which more information is available with greater ease than ever before.
我們生活在一個資訊比以前更容易獲得的時代。
限制性定語從句中，關係代詞只用that 不用which的情況：
①先行詞為不定代詞anything, nothing, something, everything, all, some, none, little, few, the one等時。
I refuse to accept the blame for something that was someone else’s fault.
我拒絕接受因別人的錯誤而對我進行的指責。
②先行詞是形容詞最高階或序數詞，或先行詞前有形容詞最高階或序數詞修飾時。
The first place that they visited in Guilin was Elephant Trunk Hill.
他們在桂林參觀的第一個地方是象鼻山。
The only part of the meal that I really liked was the dessert.
這頓飯只有甜點是我真正愛吃的。
④先行詞中既有表示人又有表示物的名詞時。
They will never forget the things and persons that they’ve seen or heard of during their long journey.
他們將永遠不會忘記在他們的長途旅行中見到或聽說過的人和事。
(3)關係詞只用which而不用that的情況：
①關係詞引導非限制性定語從句時。
The boy was away from home for a week, which worried his parents very much.
這個男孩離家一個星期了，這使他父母很擔心。
②當從句中的介詞提前，構成“介詞＋關係代詞”結構時。
We live in an age in which more information is available with greater ease than ever before.
我們生活在一個資訊比以前更容易獲得的時代。