被动语态?was so surprised at being discovered that he did not ev

被动语态?
was so surprised at being discovered that he did not even try to run away.
这句话里面的 at being discovered 是被动 可为什么是being 不能是been 为什么要用being呢? 非常感谢!
拜_伦 1年前 已收到1个回答 举报

wjhx 幼苗

共回答了25个问题采纳率:100% 举报

词组结构啊,be surprised at doing sth.
所以被动的就是:be surprised at being done sth.

1年前

7
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