定语从句～which与that的区别

一、只能用which的三种情况： 1. 引导非限制性定语从句时（即横线前有逗号） 例：He is the man who helped me yesterday. 例：This is his mother, who helped him a lot. 例1. Tom has passed the exam, ___ makes his mother very happy. A. that B. which C. whom D. what 2.引导词前有介词并且引导词作介词的宾语时。 例2. I still remember the village in ____ I was born. A. which B. that C. where D. it 3. 主句中有that 时，为了避免重复用which. 例3. I hate that film ____ makes me sleepy when seeing it. A. what B. that C. which D. whose 二、只能用that的六种情况： 1.当先行词是一个既有人又有物的并列词组时。 例4. They were talking about the persons and things ____ most impressed them. A. who B. which C. what D. that 2. 当先行词是下列表示物的不定代词时：much, little, none, all, everything, anything, nothing, something 例5. Have you got everything ____ you need? A. that B. what C. which D. when 3. 当先行词被the very, the only, the last, the same修饰时。 例6. This is the only example ____ I know. A. which B. that C. what D. those 4. 当先行词被最高级或序数词修饰时，通常用that. 例7. This is the best dictionary ____ I've ever used. A. which B. that C. those D. who 5.当先行词（或关系代词）在定语从句中作表语时。 例8. China is not the country ____ it used to be. A. which B. that C. what D. / 6.当主句中有which时，为了避免重复用that. 例9. Which is the book ____ you bought last week? A. that B. which C. who D. what