she asked me if she ___copy my homework 求讲解 A could B can C couldn't D can't

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she asked me if she ___copy my homework 求讲解 A could B can C couldn't D can't
she asked me if she ___copy my homework 求讲解
A could B can C couldn't D can't

she asked me if she ___copy my homework 求讲解 A could B can C couldn't D can't
She asked me if she (A could) copy my homework.
她问我是否可以抄我的作业.
根据句意,应该用can的肯定式.另外,根据宾语从句的时态要和主句一致的原则,只有过去式could才与主句的谓语动词asked保持一致.

A

首先整句用过去时,BD 排除
其次,she asked me if she___copy my homework
她问我是否【】抄我的作业。
应填 能,可以 could
所以答案为 A

选A
这题是过去式,B和D排除
“她问我能否抄我的数学作业”,所以用could。
除此以外,could有些委婉,比can在语气上显得礼貌一些。