作业帮the boys were playing.they must ---- their homework.
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the boys were playing.they must ---- their homework.
空上填finish的正确形式
大哥们，太牛逼了，1人1个答案
空上填finish的正确形式
大哥们，太牛逼了，1人1个答案
have finished
must后面加动词原形,并且是完成时
如还有不懂的,还可以继续追问哦\(^o^)/~
再问： 是have finished，还是finish
再答： 因为前面是were所以用完成时,用have finished
再问： 你上面那位的答案是finish
再答： 看到了 男孩们正在玩，他们一定已经做完了作业。 这里强调已经完成，就用完成时
must后面加动词原形,并且是完成时
如还有不懂的,还可以继续追问哦\(^o^)/~
再问： 是have finished，还是finish
再答： 因为前面是were所以用完成时,用have finished
再问： 你上面那位的答案是finish
再答： 看到了 男孩们正在玩，他们一定已经做完了作业。 这里强调已经完成，就用完成时
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