trong câu permission, bạn có thể sử dụng các modal verb như :
POLITE REQUEST WITH "I":
1. may, could
khá thông dụng)
ex: may i borrow your book?
could i borrow your book? --> in polite request, could has present or future meaning, not past meaning.
2. can: is used informally to request , especially the speaker is to someone he/she knows fairly well.
3. might: is also possible
ex: might i borrow your book?--> might i: quiet formal and polite, it is used much less frequently than "may i" or "could i"
POLITE REQUEST WITH "YOU"
1. would you, will you: the same
"would u" is common and is often consider more polite. however, the degree of politeness is often determined by the speaker's tone of voice.
2. could you: has the same meaning with "would you". the differrence is slight:
+would you= do you want to do this please?
+could you= do you want to do this please, and is it possible for you to do this?
3. can you: is often used informally. it usually sound less polite than "could you" or "would you".
thông cảm! tui chỉ nhớ bi nhiu đó thui. hy vọng là giúp gì được cho bạn. chúc bạn học tốt