1
vote
1answer
88 views

could and might to talk about future possibility

I have problem with using could in the future possibilities for example: They have the technology, but unless the government makes stricter laws, car companies ____ do it. With which one should I ...
4
votes
4answers
961 views

Is the structure “can have verb-ed” possible?

I have seen and heard sentences like these: He could have gone too far. John can't have eaten all the cake. But I don't seem to encounter this structure: She can have done the work. I ...
1
vote
3answers
785 views

“Can I have one apple from your box?” vs “Could I have one apple from your box?” [duplicate]

Possible Duplicate: When do I use “can” or “could”? I was doing some reading on usage of can and could. I understand that can is used when asking for ability, and could for willingness. I ...
5
votes
2answers
9k views

“Can” vs. “could” in asking a question [duplicate]

Possible Duplicate: When do I use “can” or “could”? I am a little bit confused about asking a question: Can you please tell me my next work? or Could you please tell me my next ...
6
votes
4answers
9k views

Is either “can” or “could” more polite? [duplicate]

Possible Duplicate: When do I use “can” or “could”? I wonder which of the following is more polite: Can you please change my email address? Could you please change my email ...
6
votes
3answers
11k views

When should we use “can”, “could”, “will”, “would”?

Most of the people says I wish I could, I wish you would. Can't we use I wish I can, I wish you will? I'd like to know what the main difference between the usage of can/will and could/would is.