his work,his mother allowed him to play a short while.

问题描述:

his work,his mother allowed him to play a short while.
这个句子中的 finishing 为什么用动名词?

句子说全了啊The boy finishing his work, his mother allowed him to play a short while你们学过非谓语吗?这里finish做非谓语,allow做谓语动词。简单句中只有一个动词充当谓语,其余用非谓语形式:to do, doing, done。当然这里还可以这样改,When the boy finished his work, his mother allowed him to play a short while。不明白接着问