can和could的用法区别
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发布时间:2022-04-23 08:58
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热心网友
时间:2022-04-12 11:06
can和could的用法区别:
can(1)表示体力或脑力方面的“能力”,也能表示根据客观条件能做某事的“能力”。
He can drive.
Can you jump as far as he did?
I can’t catch up with Jim.
can与be able to二者都表示“能够”,区别是:can只有现在时和过去式,而beable to可用于各种时态。如:
I’ll be able to speak French in half ayear.
He hasn’t been able to finish it on time.
(2)表示允许:
You can go now.
Can I use your bike?
(3)表示推测:can表示猜测或怀疑只用于疑问句及否定句中。
Who can it be?
It can’t be true.
could(1)can的过去式,表示过去有能力及过去的可能性。
He couldn’t climb up the mountain.
The news could be true.
(2)表示客气地请求或委婉地陈述意见。
Could you go skating with me tomorrow?
I’m afraid I couldn’t give you an answertonight.
(3)表示惊异、怀疑、不相信等态度
How could he say that? He couldn’t be in Beijing.
热心网友
时间:2022-04-12 12:41
can和could的用法区别:
can(1)表示体力或脑力方面的“能力”,也能表示根据客观条件能做某事的“能力”。
He can drive.
Can you jump as far as he did?
I can’t catch up with Jim.
can与be able to二者都表示“能够”,区别是:can只有现在时和过去式,而beable to可用于各种时态。如:
I’ll be able to speak French in half ayear.
He hasn’t been able to finish it on time.
(2)表示允许:
You can go now.
Can I use your bike?
(3)表示推测:can表示猜测或怀疑只用于疑问句及否定句中。
Who can it be?
It can’t be true.
could(1)can的过去式,表示过去有能力及过去的可能性。
He couldn’t climb up the mountain.
The news could be true.
(2)表示客气地请求或委婉地陈述意见。
Could you go skating with me tomorrow?
I’m afraid I couldn’t give you an answertonight.
(3)表示惊异、怀疑、不相信等态度
How could he say that? He couldn’t be in Beijing.