May vs can in a request
5399
"Can/may/will you help me with this?"
96881
What's the difference between 'allow' and 'allow for'?
133639
Is either "can" or "could" more polite?
59180
When to use what or who
62938
"Not able to" vs. "unable to"
28323
When do I use "can" or "could"?
111755
may, might, would
141279
Is there a difference between  and ?
66576
Use "got" or "have got"?
81872
When do you use POST and when do you use GET?
115507
Do serious grammarians endorse the "Can I"/"May I" distinction?
52294
"need to do" vs "need do"
151889
What is the difference between “do” and “make”?
37279
"can't" versus "couldn't", what is the difference?
92354
can we use "can", "could", "may" & "might" to ask for suggestions"?
2697
Can vs. Could in the reply "It can/could be in the car"
27037
Usage of 'shall' in questions