三个介词的用法BY/OF/FOR/越详细越好.

题目详情

三个介词的用法
BY / OF / FOR /越详细越好.

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答案和解析

BY用于被怎么怎么样,he was biten by a dog.he learned english by himself.
of属于从属关系,相当于“的”,one of those things.
for属于引出对象,i did it for Mary,not for money.

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