Mr Black had to go back,

Mr Black had to go back,
后面填hadn't he?
这个是特殊用法吗？

pn2006 1年前已收到3个回答举报

共回答了17个问题采纳率：88.2% 举报

had to 是have to (不得不)的过去形式,不是情态动词,所以提取助动词did
Mr Black had to go back,didn't he?
have to 是固定用法,有不得不、必须的意思,把它看成一般的行为动词就好了,有过去形式

1年前

半随流水幼苗

共回答了117个问题举报

不对
这个不是完成时
是过去式
应为
didn't he

1年前

大大鸟儿幼苗

共回答了36个问题举报

didn't he?
现在时 have to do. 表示不得不
过去时 had to do.
后跟 don't + 主语（现在时）
didn't +主语（过去时）

1年前

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