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have to 的时态疑问

来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/11/18 09:06:45
have to 的时态疑问
( Have you ever had to ) take a taxi home in the past? 
这是现在完成时的时态吗?
如果变为过去式提问是( Did you ever have to)?
Doesn't/don't  need to 等于 needn't
have to 的时态疑问
是的
是的
等于但needn‘t to的to要去掉