有关情态动词的1个句子i saw Mary in the library yesterday .you can't ha
有关情态动词的1个句子
i saw Mary in the library yesterday .
you can't have seen her ,she is still in hospital.
为什么用完成式呀?
__turn_down the radio ,dthe baby's asleep in the next room.
为什么不用不定式呀,不是关掉表示目的吗?
have you any idea why she did it 为什么用why