----to carry him?1 did they have 2 had they 3 must they 4 ha

问题描述:

____to carry him?1 did they have 2 had they 3 must they 4 have they 选择哪一个,及分别说出每一个为
1个回答 分类:英语 2014-11-20

问题解答:

我来补答
尽管must=have to,但后者中的have是助动词,可以适用的时态范围更广.选1 did they have
2 应该改为:Did they have to carry him?
3 应该改为:must they carry him?
4 应该改为:Do they have to carry him?
 
 
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