Can~ (be able to/allowed to)
Verb(+object) + [ได้]
1.I can go.
ผมไปได้
2.You can go.
คุณไปได้
Can't do~ (not able to/not allowed to)
Verb(+object) + [ไม่] + [ได้]
1.I can't go.
ผมไปไม่ได้
2.You can't go.
คุณไปไม่ได้
Can you~? Could you~?(request)
Verb(+object) + [ได้] + [ไหม](interrogative)
1.Can I go?
ผมไปได้ไหม
2.Could you go?
คุณไปได้ไหม
*(ได้) can mean "possible" "impossible" "allow" "forbid" "request". (A nearly identical word also exists in English "can".)
