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Pleasehelp Posted 17 years ago
Grammar

Can/could

Is could the past tense of can? What other uses can could be used as?

I also remember could, would, should, is the polite form of the base form. Please explain. TY
  

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3 Answers
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Hi Pleasehelp,

The usage on and explanations on the modals have been discussed many times.

Google "modals". I think the basic explanations can be found quite easily.
pleasehelpIs could the past tense of can? What other uses can could be used as?

That's how some of text books explained it which I find very confusing.

If
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'Could' is used to make suggestions or requests and to express possibility and past ability. It is also very common in conditional sentences.

1. She could travel with us all the time. (past ability - you can't use 'can')

2. If not soon contained, the fire could prove disastrous. (possibility).

3.You could go to the hockey game with me. (suggestion)

4. Could you

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