Can or could use?

'Can' is a modal verb, which is used with the main verb to express the ability of a person or thing in doing something. On the other extreme, 'could' is the past participle or second form of the verb, which is used with the main verb to talk about a past the ability of an individual in doing something.
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When we used could and can?

Can, like could and would, is used to ask a polite question, but can is only used to ask permission to do or say something ("Can I borrow your car?" "Can I get you something to drink?"). Could is the past tense of can, but it also has uses apart from that--and that is where the confusion lies.
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Which is correct I can or I could?

To summarize, 'can' is the present tense version of the word and 'could' is the past tense version of the word. 'Could' is also used when a condition must be fulfilled in order for the thing to happen. 'Can' is used when there is nothing that would stop the thing from happening.
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When can we use could in a sentence?

'Could' is used to express: possibility, past ability, and to make suggestions and requests. 'Could' is also used in conditional sentences as the conditional form of 'can'. Possibility You could cause an accident driving like that. Past ability Sarah could dance like a professional at the age of six.
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Can or could you please?

We also use 'could' to ask permission; it is more polite or formal than 'can'. Changing the word order to "could you please" is no more or less polite - it's a matter of style. whether requests starting with "Please can/could you..." render the same degree of politeness as those that start with "Could you please...".
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CAN or COULD | The Difference Between CAN and COULD | Modal Verbs in English Grammar



Is could present tense?

Could is used for past and future instances, or sometimes in the present tense (although in the present tense it is normally describing a possibility or is part of a question). For example, She spoke so fast that I could not hear her, or, he could do it if he chooses to. In the present, we use can.
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Could you or can you or would you?

Here are three explanations you'll usually come across: “Would you” is correct, because you are asking if someone will do something and not whether they can do it. “Would you” also sounds more polite than “Could you.” “Would you” and “Could you” are equally polite and valid ways to make a request.
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Can you give or could you give?

"Could" is the polite form of "can"—so both are correct, but we use them in different situations. We use "can" when we are telling someone to do something. We use "could" when we are making a request.
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Could be done or can be done?

The modal verbs can and could represent the ability of a person or thing in doing something. However, there is a difference in their usage, as 'can' is used in present situation, whereas we can use 'could' for talking about a past ability. Both are followed by a base form of the verb.
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Can and could exercise?

Exercises: modal verbs
  • - Penguins. could. can. swim very well.
  • - I. can. run very fast. when I was younger.
  • - It's snowing, so we. can't. couldn't. ...
  • - Yesterday we. can't. couldn't. play.
  • - Could. you play the piano. ...
  • - You have a nice tricycle. Can. Could. ...
  • - He has a broken leg, so he. couldn't. ...
  • - I. couldn't. can't.
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Could can be used in future tense?

Well, It's future tense sentence. We don't use Could for suggestions in the present tense. It's always in the future when Could is followed by Verb in its base form, in this case Could is followed by save. But you can use Could for past suggestions.
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Could uses in English?

"Could" is a modal verb used to express possibility or past ability as well as to make suggestions and requests.
...
Using "Could" in Present, Past, and Future
  • John could be the one who stole the money.
  • John could have been the one who stole the money.
  • John could go to jail for stealing the money.
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Could MAY CAN must?

The modal verb CAN shows that something is possible, allowed or somebody/something has the ability to do something. COULD is used as the past tense of can, or to talk about ability that was possible in the past. MAY and MIGHT are used to show that something is possible. MUST shows that something is necessary.
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Could you please or could you kindly?

Whereas "Please could you..." is straightforward, conventional, polite and ubiquitous. Show activity on this post. I would prefer the word please in more formal communications. Kindly would be better-suited for familiar environments.
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Can I or may I or shall I?

Well, actually, in modern English they are both considered acceptable. May is a preferred in a formal style or when you want to be more polite. In less formal situations, can is perfectly acceptable. Both can and may are used to ask for permission.
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Should I or can I?

Normally they are two verbs that are confused by the user. The auxiliary verb 'can' is used to indicate the idea of 'capability'. On the other hand, the verb 'should' is used in the imperative. This is the main difference between the two words.
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Would you help me or could you help me?

Feel free to just provide example sentences. Would you help me is asking if the person is willing to help you. And could you help me is asking if the person is able to help to.
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Could is a past tense?

Could is used as the past tense of can when it means that someone had the ability to do something, or that something was possible: The Roman army could march 30 miles in a day.
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Could do meaning?

If you say that you could do with something, you mean that you need it or would benefit from it. I could do with a cup of tea. The range could do with being extended. See full dictionary entry for do.
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Could have meaning?

used for saying that something was possible in the past, even though it did not happen. You could have been killed. I could have told you, but I didn't think you would listen. She could have married Gerald if she'd wanted to. Synonyms and related words.
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Can I may I could I?

"Can I" is best for semi-formal situations. "Could I" is best for semi-formal situations. "May I" is best for semi-formal situations. Which of these is only used with the pronouns "I" and "we" ?
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Can could might may grammar?

"May," "might," and "could" can all be used to say that something is possible, as in "The story may/might/could be true" or "The painting may/might/could be very old." You can use any of the three in contexts like these.
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Could should would?

Would, should and could are three auxiliary verbs that can be defined as past tenses of will, shall, and can; however, you may learn more from seeing sentences using these auxiliaries than from definitions. Examples of usage follow.
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When we use may or might?

Although “might” is not the past tense of “may,” it is still the best word to describe something that happened in the past. 4. “May” is better for the present tense. If there is a chance of something happening in the immediate term, “may” tends to be the better word choice.
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Is it can or could?

Both 'can' and ' could' are modal verbs that refer to 'a possibility', 'ability' or 'capacity'. 'Can' refers to a general truth or something that has a strong possibility. 'Could' refers to something that has a weak possibility, or something that might happen, but not necessarily a general truth.
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