Asking for permission

Asking for permission:
طلب الإذن للقيام بعمل ما

can,could, may,
be allowed
Are we allowed to use a dictionary for this test?
can, could are more informal and usually spoken

في الكلام المحكي وبطريقة غير رسمية

Can i borrow your bike?

may is more formal
تستعمل عند الحديث بطريقة رسمية وفيها احترام اكثر
May we smoke in here? asking someone u don'tknow
May i leave ? asking your teacher in the class

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Would you like

لسؤال الاخر عن رغبته بشيء ما بطريقة لائقة
It is more polite than do u want

would you like some tea?
Yes,i would.

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For making request
can , could, will , would

could is a little more formal
can is more familiar

Could you help me please?
Will you pass the salt,please?
Could you passthe salt please?
Can i speak to u please?
Could i ask you a question?
Would you mind helping me please?
Do u mind if i open the window?
Would you mind if i opened the window?

Can you help me please?
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Shall is used in questions with *i and we* only
to express an offer . a suggestion, or a request for advice.
الا قتراح , طلب نصيحة وتقديم عرض.
shall i carry your bag for you?
That's very kind .Thank you.
shall we go for a meal tonight?
Mmmm.I'd love to.
What shall we do?we haven't got any money.
We could ask dad.

should is used to make an informal suggestion.
What should we have for dinner?
What should we do tonight