I don't konw A.how I could finish my homework on time B.how I can finish my homework on timeI don't konw A.how I could finish my homework on timeB.how I can finish my homework on time为什么选B不选A?

来源：学生作业帮助网编辑：六六作业网时间：2024/11/24 01:07:10

Idon''tkonwA.howIcouldfinishmyhomeworkontimeB.howIcanfinishmyhomeworkontimeIdon''tkonwA.howIcouldfinis

I don't konw A.how I could finish my homework on time B.how I can finish my homework on timeI don't konw A.how I could finish my homework on timeB.how I can finish my homework on time为什么选B不选A?
I don't konw A.how I could finish my homework on time B.how I can finish my homework on time
I don't konw
A.how I could finish my homework on time
B.how I can finish my homework on time
为什么选B不选A?

I don't konw A.how I could finish my homework on time B.how I can finish my homework on timeI don't konw A.how I could finish my homework on timeB.how I can finish my homework on time为什么选B不选A?
因为could 只有两种情况下使用.
1 表示过去的能力,如 I could ride a bike when I was young.
2 表示委婉的语气,只用于疑问句中.如 Could you tell me your name?
而本句是肯定句,不表示过去的能力,所以,只能用can,表示一般将来的可能性.
“我不知道我怎么能按时完成作业”

could为虚拟语气，句子的意思中没有虚拟，没有假设意味。他就是事实求实的问：怎么才能？

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