Japanese phrase
どのくらい___してもいいですか？ do no ku ra i ___ shi te mo i i de su ka
Meaning
How long can I ___?
When to use it
Asks how long an activity is permitted to continue. It is a polite way to ask about a time limit in places such as a library, workplace, or public facility.
Example dialogue
この部屋でどのくらい勉強してもいいですか？ ko no heya de do no ku ra i ben kyō shi te mo i i de su ka
How long can I study in this room?
二時間までです。 ni ji kan ma de de su
Up to two hours.