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形容词宾语从句问题在I'mdoubtfulwhetherhewillcome这一句中,为何doubtful后可以直接跟whether从句而不是I'mdoubtfulofwhetherhewillcome?而Theywereworriedaboutwhethertheycouldgetitback.这一句里形容词

题目详情
形容词宾语从句问题
在I'm doubtful whether he will come 这一句中,为何doubtful 后可以直接跟whether从句而不是I'm doubtful of whether he will come?
而They were worried about whether they could get it back.这一句里形容词后又跟了介词,这是为什么?
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答案和解析
前句是典型的形容词宾语,即系词+心理状态形容词+宾语
I am afriad that he can't finish the work.
后句则是短语动词作谓语 be worried about是短语动词 不可拆开的.
I am worried about what she will say at the meeting.
两者不是一回事.