Question 42: What's the tag question to the sentence "He has
to study English."?
Answer: "Have to" is a
semi-auxiliary thus we should use "don't" in the tag question.
E.g. He
has to study English, doesn't he?
The same rule can be applied to
"used to" and "had better".
E.g. They used to live there, didn't
(usedn't) they?
You'd
better go at once, hadn't you?
Note:
1). "have" as auxiliary
verb
E.g. He has always had his hair cut on Sunday, hasn't he?
2).
"have" as action verb
E.g. You have no brother, do you?
问题42: “He has to study English.”的反意疑问部分应该是怎样的？
回答: “have to”是一个半助动词，所以反意疑问句应用“don't”。
如：He has to
study English, doesn't he?
“used to”和“had better”也适合此规则。
如：They used
to live there, didn't (usedn't)
they?
You'd better go
at once, hadn't you?
注意：
1).“have”作为助动词。
如：He has always had
his hair cut on Sunday, hasn't he?
2).“have”作为实义动词。
如：You have no
brother, do
you?
42: “He has to study English.”的反意疑问部分应该是怎样的？
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