When Use Can And Could?

Can vs Can grammar?

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..

Can have been sentences?

A: – During our phone calls, Peter assured me he fed my cat every week, but now she is dead! B: – Can he have been lying? [Question: possible, though I’d say “could he have been” is better here.] A: – No, he can’t have been lying, he has been my best friend for years.

Could have been meaning?

Could have means that something was possible in the past, but it did not happen. … Native speakers often do not pronounce their past tense modals as clearly as Tiffany. Could have been usually gets contracted to could’ve been or even coulda’ been.

When to use can?

Can: usesPermission. We often use can to ask for or give permission: … Ability. We often use can to talk about ability to do something in the present or future: … General truths. … Possibility. … Guessing and predicting: can’t as the negative of must. … Requests. … Reproaches. … Offers.

Where is could used?

Could: “Could” is used to express possibility. Something that could happen is not necessarily something that must happen. Could does not express desire or opinion. It is simply used to state one or more things that are possible (even if they are unlikely) or were possible in the past (even if they didn’t happen).

Can have been?

While Can’t Have (Been) is used to refer to an incident in the near past, Couldn’t Have (Been) is used for an event that happened way back in the past. When it comes to modal verbs — the verbs that express necessity or possibility — many learners find them rather confusing.

Can grammar examples?

“Can” is one of the most commonly used modal verbs in English. It can be used to express ability or opportunity, to request or offer permission, and to show possibility or impossibility. Examples: I can ride a horse.

Can and could sentences examples?

We use could to show that something is possible, but not certain:They could come by car. (= Maybe they will come by car.) … It can be very cold here in winter. … That can’t be true. … It’s ten o’clock. … It could be very cold there in winter. … They know the way here. … She can speak several languages. … I can see you.More items…

Can we use can and able together?

This may be common in Indian English. However, it’s certainly not accepted as Standard English because, as you say, can and be able to have the same meaning. Because able to isn’t a verb but part of an adjectival phrase, it requires a verb; but as it’s adjectival that verb is be, not can.

Can in the future?

There is no such way of casting any of the modal verbs can/could, may/might, must, shall/should, will/would in future form with will. … The simple present of most verbs can be used with future reference, so one thing you can do is simply use can with some indication of futurity.

Can have done grammar?

When talking about possibilities in the past, You often use “could have done”. “She could have gone to the theatre with him.” “He couldn’t have done such a thing!”