We use can/can't:

• to talk ability in the present
( ability - qobiliyat )

I can speak Russian perfectly
( perfectly - mukammal )
Michael Phelps can swim really fast
They can’t dance very well

to say if something is possible or allowed in the present:
( possible - mumkin, allowed - ruxsat etilgan )

Can I ask a question?
We can watch the football on my laptop
Students can use dictionaries in the exam
You can't drive in the US until you are 16

• for making an arrangement:
( arrangement - kelishuv , bitim, tashkil qilish )

The doctor can see you tomorrow at 9:30
Can you meet me here at nine o'clock on Monday ?