Tom used to went to school by bus on his own 改错

sarayong 1年前 已收到1个回答 举报

梦域蓝冰 幼苗

共回答了15个问题采纳率:73.3% 举报

Tom used to go to school by bus on his onw.
used to do 过去常做某事
be used to do 被用来做某事(被动语态)
be used to doing 习惯做某事(有个种时态,这里的 to 是介词)

1年前

3
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