導語：定語從句的關係用法有哪些?以下是小編為大家整理的文章，歡迎閱讀!希望對大家有所幫助!
只用that不用which的情況
先行詞是all，much，little，something，everything，anything，nothing，none等不定代詞時。如：I refuse to accept the blame for something that was his fault.
先行詞被the only，any，few，no，very等修飾時。如：Australia is the only country that is also a continent.
先行詞是形容詞的最高階或序數詞，或被形容詞的'最高階、序數詞修飾時。如：This is the most interesting film that I’ve ever seen.
先行詞人、物並用時。如：Do you know the things and persons that they are talking about?
主句的主語是疑問詞who或which時。如：Which is the bike that you lost?
先行詞在主句中作表語， 而關係代詞也在從句中作表語時。如：Shandong is no longer the province that it used to be.
只用which不用that的情況
關係代詞前有介詞時。如：Is this the house in which Shakespeare was born?
引導非限制性定語從句時。如：As a child， Jack studied in a village school， which is named after his grandfather.
先行詞為that/those時。如：What’s that which was put in the car?
which用作定語時。如：He may be late， in which case we ought to wait for him.
the same ... as ... 與the same ... that ...
the same ... as表示相似或同類的東西，the same ... that表示同一人或物。如：
This is the same book as he lent me last week.
This is the same book that he lent me last week.
such/so ... as與such/so ... that
such/so ... as (定語從句)像……那樣
such/so ... that (狀語從句)如此……以至於
This is such an easy question as I can answer.
This is such an easy question that I can answer it.
as與which
as引導的非限制性定語從句既可以放在主句前， 也可以放在主句後， 有時還可插入主句中。which引導的非限制性定語從句通常放在主句之後。
as意為“正如……”，後面的謂語動詞多用see，know，expect，say，mention，report等; which意為“這一點”或“這件事”等。
He is a very successful man， as is known to all.
The meeting was put off， which astonished us.
