兩者的區(qū)別只是在于一個接動詞 一個接名詞啊
例如
I am busy in doing my homework.
I am busy with my homework.
be busy (in) doing sth 和be busy with sth的意思 并做一組句子
be busy (in) doing sth 和be busy with sth的意思 并做一組句子
用這兩個短語分別做個句子
用這兩個短語分別做個句子
英語人氣：927 ℃時間：2019-10-19 15:50:35
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