如果after后面是从句的话就不用ing了，如你给的例句，是错误的，正确的应该是 after he leaves
如果后面是短语的话就应该加ing，如after leaving
如果后面是短语的话就应该加ing，如after leaving
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第1个回答 2011-05-02
后面直接跟动词的话，用ing，如果有主语，就用原型了。
after leaving, before leaving
after he leaves, before he leaves.
after leaving, before leaving
after he leaves, before he leaves.
第2个回答 2011-05-02
只有after和before直接接动词才加ing，上面的例句是错的，应是“after he leaves"或“before he leaves".
第3个回答 2011-05-02
不一定，如果加了宾语要看具体的情景
After he left
若直接加动词就要用ing，因为after和before作介词使用
有不同搭配的~
After he left
若直接加动词就要用ing，因为after和before作介词使用
有不同搭配的~
第4个回答 2011-05-02
不跟主语就该跟动名词宾语从句，跟主语的从句根据主句决定用何时态，两种都行。 比如：
He went to play tennis after finishing his homework.
= He went to play tennis after he had finished his homework.
He went to play tennis after finishing his homework.
= He went to play tennis after he had finished his homework.
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