- Used to make a request for someone to do something.
- Could you...? is generally considered slightly more polite or tentative than Can you...?.
Explanation
Origin
- Standard grammatical structures using modal verbs (can, could) to ask about ability or possibility, which function pragmatically as requests.
- Could is the past tense of can but is used here hypothetically, making the request sound less direct and therefore more polite.
Synonyms & Related Expressions
Alternatives
Slang/Informal:
- Gimme that. (Very informal, can be rude) *Use with caution*
- Pass the salt. (Imperative, direct)
- You wanna grab that for me?
Vulgar/Emphatic: (Usually expressing frustration when making the request)
- Can you fuckin' pass the salt already? *Very rude*
Milder / More Polite:
- Would you be able to...?
- I was wondering if you could...
- If it's not too much trouble, could you...?
Situational Appropriateness
- Can you...?: Generally acceptable in most informal and semi-formal situations. Can sometimes sound slightly demanding depending on tone and context.
- Could you...?: Suitable for almost all situations, from informal to formal. Preferred when asking superiors or strangers.
Misunderstanding Warnings
- Extremely unlikely to be misunderstood. The main nuance is the level of politeness conveyed by Can vs. Could. Using Can you when Could you is expected (e.g., to a boss) might seem slightly impolite.
Examples
- Can you pass the salt?
- Can you help me with this?
- Could you please close the window?
- Could you send me the file when you have a moment?
Dialogue
Sarah: Could you hand me that book?
Tom: Sure, here you go.
Sarah: Thanks.
Manager: Can you finish this report by end of day?
Employee: I'm not sure, I still have the other project to complete. Could I possibly get it to you tomorrow morning?
Manager: Okay, tomorrow morning is fine.
Social Media Examples
- (In a group chat): Can you guys send me the notes from the meeting?
- (Public request): Does anyone know a good plumber in the area? Could you share recommendations? #help #local
Response Patterns
- Affirmative: Sure. / Okay. / Yes, of course. / No problem. / Certainly. (More formal)
- Negative/Unable: Sorry, I can't right now. / I'm afraid I'm busy at the moment. / I wish I could, but...
- Clarification: Which file? / Right now?
Common Follow-up Questions/Actions
- After an affirmative response: The requester usually says Thanks or Thank you. The person asked then performs the action.
- After a negative response: The requester might say Okay, no worries or try to find an alternative.
- The person being asked might offer an alternative if they refuse: I can't right now, but I can help you in an hour.
Conversation Starter
- Yes, can initiate an interaction focused on achieving a task.
Intonation
- Typically rising intonation at the end, indicating a question.
- Stress often falls on the main verb describing the action.
- Can you PASS the salt?
- Could you please CLOSE the window? (Stress on please adds politeness).
Generation Differences
- Universal. The distinction in politeness between can and could is taught and generally observed, though Can you is very common informally.
Regional Variations
- Universal in English. Some prescriptivists argue Can is only for ability and May for permission, but Can I...? for permission and Can you...? for requests are standard in modern usage.