题目内容：

The meeting has been postponed until next week
请用put off 把这个句子改为同义句,has been还用加吗?
为啥

优质解答

the meeting has been put off until next week
因为put off 都是动词

追问：

有人说has been不加，到底加不加呢

追答：

你是要把这个句子改为同义句, 如果你不加的话, 就会变成''会议推迟到下周'', 而不是"本次会议已被推迟到下周"