have to的否定形式和疑问句形式分别是?

如题所述

否定形式:加助动词 don't have to(主语为第三人称单数要变成doesn't have to)
疑问句形式:Do.. have to(主语为第三人称单数要变成Does..have to)
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第1个回答  2012-05-17
don't have to
do you have to do?