搜搜考试网wasn't didn't isn't的用法 各举两个例子
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wasn't didn't isn't的用法 各举两个例子
1.wasn't是be动词isn't的过去时,用于过去进行时.
如：1.he wasn't at home yesterday.
2.I wasn't doing my homework yesterday,I was reading books.
2.didn't是“do" "does"的过去时,用于过去现在时.
如：1.I didn't go to the library last week.
2.he didn't take a shower until his mother came back.
3.isn't是一般现在式,后面一般加动词--ing形式
如：1.he is dancing in the gym
2.is she playing football on the playground?
如：1.he wasn't at home yesterday.
2.I wasn't doing my homework yesterday,I was reading books.
2.didn't是“do" "does"的过去时,用于过去现在时.
如：1.I didn't go to the library last week.
2.he didn't take a shower until his mother came back.
3.isn't是一般现在式,后面一般加动词--ing形式
如：1.he is dancing in the gym
2.is she playing football on the playground?
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