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问题：wasn#39;tdidn#39;tisn#39;t的用法各举两个例子
答案：↓↓↓ 韩院彬的回答： 网友采纳 1.wasn't是be动词isn't的过去时,用于过去进行时. 如：1.hewasn'tathomeyesterday. 2.Iwasn'tdoingmyhomeworkyesterday,Iwasreadingbooks. 2.didn't是“do""does"的过去时,用于过去现在时. 如：1.Ididn'tgotothelibrarylastweek. 2.hedidn'ttakeashoweruntilhismothercameback. 3.isn't是一般现在式,后面一般加动词--ing形式 如：1.heisdancinginthegym 2.issheplayingfootballontheplayground? | 
