Wah How to use "as long as" to express a condition

You have learnt 'as..as' in the comparative sentence in this topic
Wah How to compare things with "As"

Now we use as long as to express a condition.
When you want to say something that will happen only on condition or one thing depends on another thing.

    
    You can go out as long as you promise to be back before 10 p.m.
    You can (only) go out if you promise to be back before 10 p.m.

    You can stay here as long as you keep quiet.
    You can (only) stay here if you keep quiet.

    We will help you as long as you ask.
    We will help you if you ask.

    You will pass the exam as long as you study hard.
    You will pass the exam if you study hard.

    You can check in online as long as you have an internet.
    You can check in online if you have an internet.