In British English, how you ask is just as important as what you ask. The three main request modals have different levels of formality. All three are grammatically correct — the difference is social.
| Modal | Level | Use with | Example |
|---|---|---|---|
| Can | Casual / Informal | Friends, family, close colleagues | "Can I have the salt?" / "Can you help me?" |
| Could | Polite / Standard | Waiters, strangers, most adults | "Could I see the menu?" / "Could we have the bill?" |
| May | Formal / Respectful | Very formal situations, specific permission | "May I sit here?" / "May I speak with the manager?" |
Use can for present ability — something you are able to do now. Use could for past ability — something you were able to do at a time in the past (but may not be able to do now). Both use the infinitive without to.
Can has no future form. You cannot say will can. Instead, use will be able to for future ability or possibility, and won't be able to for future inability. This structure uses the full infinitive with to.
| Form | Structure | Example |
|---|---|---|
| Affirmative | will be able to + infinitive | I will be able to pay the bill tomorrow. |
| Negative | won't be able to + infinitive | She won't be able to drink wine — she's driving. |
| Question | Will + subject + be able to...? | Will you be able to come on Friday? |
May and might both express possibility — something that is possible but not certain. Might suggests slightly less certainty than may, but in everyday British English they are often interchangeable. Neither is used for predictions about ability.
| Modal | Certainty | Example |
|---|---|---|
| may | ~50% — it is possible | The fish may be good tonight. / I may have the steak. |
| might | ~30% — I am less sure | The chef might be French. / It might rain later. |
| may not | Negative possibility | I may not be able to come on Friday. |
| might not | Negative — even less sure | She might not like spicy food. |
We can use modals to express what we believe to be logically true or impossible — even without direct evidence. Can't means "this is impossible — I am certain it is not true." Must means "I am almost certain this is true based on the evidence."
Each modal forms its negative differently. Learn these carefully — the negative meaning often changes significantly from the positive.
| Positive | Negative | Short form | Meaning |
|---|---|---|---|
| can | cannot | can't | Not possible / Not able (now) |
| could | could not | couldn't | Was not able (past) |
| may | may not | — (no short form) | It is possible that not... |
| might | might not | mightn't (rare) | It is perhaps not... |
| will be able to | will not be able to | won't be able to | Not possible in future |
| must | must not / mustn't | mustn't | It is forbidden |
Mr. Smith: "Emma, could you book a table for four at The Royal Oak?" Emma: "I tried calling them this morning, but I couldn't get through. Their line was busy." Mr. Smith: "That is annoying. We must secure a table." Emma: "I might try booking via their app. I will be able to confirm the time in ten minutes. Do we need a vegetarian option?" Mr. Smith: "Yes, Sarah doesn't eat meat."
1. Why couldn't Emma book the table by phone?
2. How does Emma plan to try booking next?
3. "I might try booking via their app." — what does might tell us here? (Language focus)
4. Who in the group needs a vegetarian option? (Inference)
Waiter: "Good evening. May I take your beverage order? And could I interest you in some starters?" Jake: "Just a coke for me. Also, I seem to be missing my cutlery. Could I have a knife and fork?" Sarah: "I might have a glass of red wine, but I'm driving later, so I won't be able to drink alcohol. Just sparkling water, please." Waiter: "Certainly. I can bring some bread while you wait."
1. Why does the waiter use May at the start of the conversation?
2. What is Jake missing from the table?
3. "I won't be able to drink alcohol." — why this form instead of can't? (Language focus)
4. What will the waiter bring to the table while they wait? (Inference)
Emma: "I can't decide. The steak looks delicious, but I might try the fish." Jake: "I can recommend the steak. It is their signature dish." Emma: "Okay, I'll have the steak. I like it rare." Waiter: "I'm afraid we might have run out of steaks. Let me check with the chef... Ah, yes. We won't be able to serve steak tonight." Emma: "Oh, that is disappointing. I will have the fish then."
1. "I can recommend the steak." — what type of can is this?
2. How does Emma like her steak?
3. "We won't be able to serve steak tonight." — why not can't? (Language focus)
4. What does Emma decide to eat in the end? (Inference)
Mr. Smith: "Waiter, could we have the bill, please?" Waiter: "Certainly, sir. Here you are." Mr. Smith: "Excuse me, I think there is a mistake. We didn't order the champagne. We couldn't possibly drink that much!" Waiter: "I am terribly sorry. I might have confused your table with Table 5. I will be able to print a new receipt in a moment."
1. What was the mistake on the bill?
2. "I might have confused your table with Table 5." — what does the waiter mean?
3. "Could we have the bill" — why could and not can? (Language focus)
4. What can we infer about Mr. Smith's character from his response? (Inference)
Sarah's Review: "We visited The Royal Oak last night. The atmosphere was lovely, but the service was slow. We couldn't get a table at first. The food was okay, but the soup was too spicy. I might go back for drinks, but I won't be able to recommend the food to my friends. Three stars."
1. What was wrong with the soup?
2. "We couldn't get a table at first." — what does this tell us?
3. "I might go back for drinks." — what does this suggest? (Language focus)
4. Overall, would Sarah recommend this restaurant to friends? (Inference)
Last Friday, Anna and her colleague tried to book a table at a new restaurant. Anna called the restaurant, but she (1) get through — the line was engaged. She tried again later, and this time she (2) speak to the manager directly.
At the restaurant that evening, the waiter asked: " (3) I take your coats?" Anna's colleague, Tom, said he (4) try the fish, but he was not sure yet. Anna said she (5) eat shellfish because of an allergy.
The waiter said the steak was the best dish, but that the chef (6) be able to serve it medium — only well-done. Tom thought: "This (7) be the strangest restaurant I have ever visited."
At the end of the meal, Anna asked: " (8) we have the bill, please?" The waiter told them they (9) pay by cash — card only. Luckily, Anna (10) find her card at the bottom of her bag.