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David (not be)with us today ,because he (be) ill yesterday. (用所给动词的适当形式填空)
人气:254 ℃ 时间:2019-09-18 01:23:02
解答
David (isn't)with us today ,because he (was) ill yesterday括号里的是动词原形,是让把括号里的词根据一个适当形式填空,改完没括号Davidisn't with us today ,because he was ill yesterday.那就去掉括号吧,这里是考be的变形现在时:be-is(对第三人称单数)/am(第一人称单数I)/are(其他人称)过去时:be-was(单数)/were(第二人称即其他)
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