have to所在的句子在进行句型转换时要借助什么

如题所述

have to所在的句子在进行句型转换时要借助于助动词 do ,does ,did .
例如:
I have to sweep the floor.
---I don't have to sweep the floor.
She has to finish her homework .
---Does she have to finish her homework ?
They had to water the flowers.
---Did they have to water the flowers?

希望能帮到你,祝你学习进步!
温馨提示:答案为网友推荐,仅供参考
第1个回答  2013-04-06
借助于助动词do.
第2个回答  2013-04-06
助动词 do ,does ,did .
情态动词can,may mast等
相似回答