Ben did his homework after school yesterday.(改为否定句)

Ben did his homework after school yesterday.(改为否定句)
Ben ---- -------- his homework after school yesterday.
英语人气:906 ℃时间:2019-08-22 16:18:52
优质解答
Ben 【didn't】【do】 his homework after school yesterday.
助动词后用动词原形,主动词本身变成过去时态的否定形式
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