引导词只能用that的情况：
1. 当先行词是all, little, much,
none, few 等不定代词时。
2. 当先行词被 anything, everything,
nothing 等复合代词修饰时（但先行词是everyone， anyone等时仍用who）
3. 当先行词被形容词最高级修饰时
4. 当先行词被序数词修饰时
5. 当先行词被the only， the very 修
饰时
6. 当先行词又有人又有物时
7. 当主句已有疑问词who或者which时
Who that has common sense would believe such nonsense?
有常识的人谁会相信这种胡说八道？
Which is the T-shirt that fits me most?
哪件T恤最合我的身？
8． 当先行词在主句中做表语，而关系代词在从句中也做表语时。
He is no longer the man that
ten years ago.
he was
只用who而不用that的情况：
1． 当先行词one，anyone，those指人
时，一般用who而不用that
2． 指人的先行词与定语从句之间被其
他词分隔时。
I met a foreign student from
Nanjing University who could
communicate with me in Chinese.
3. 在Here be 或There be 开头的句
子中。
Here is the man who often comes
to my help.
注意：
如果有两个定语从句，其中前一句的
系代词用that，另一个则多用which或 who。
在判断引导词时，要根据句子意义判断 定语从句所修饰的对象，再确定先行词。 若修饰的对象是一个句子时，引导词则 用which。
I went to Xiapeng Middle School last
summer; ____ was a very good
experience.
引导词只能用that的情况：
1. 当先行词是all, little, much,
none, few 等不定代词时。
2. 当先行词被 anything, everything,
nothing 等复合代词修饰时（但先行词是everyone， anyone等时仍用who）
3. 当先行词被形容词最高级修饰时
4. 当先行词被序数词修饰时
5. 当先行词被the only， the very 修
饰时
6. 当先行词又有人又有物时
7. 当主句已有疑问词who或者which时
Who that has common sense would believe such nonsense?
有常识的人谁会相信这种胡说八道？
Which is the T-shirt that fits me most?
哪件T恤最合我的身？
8． 当先行词在主句中做表语，而关系代词在从句中也做表语时。
He is no longer the man that
ten years ago.
he was
只用who而不用that的情况：
1． 当先行词one，anyone，those指人
时，一般用who而不用that
2． 指人的先行词与定语从句之间被其
他词分隔时。
I met a foreign student from
Nanjing University who could
communicate with me in Chinese.
3. 在Here be 或There be 开头的句
子中。
Here is the man who often comes
to my help.
注意：
如果有两个定语从句，其中前一句的
系代词用that，另一个则多用which或 who。
在判断引导词时，要根据句子意义判断 定语从句所修饰的对象，再确定先行词。 若修饰的对象是一个句子时，引导词则 用which。
I went to Xiapeng Middle School last
summer; ____ was a very good
experience.