Learn English – Which one is the correct question? -“Are you still living in that apartment?”or“Do you still live in that apartment?”

We would say, "how long have you lived there?" (present perfect; began in the past and continues)

Or, "how long has your family lived there?"

We might say "How many years have you lived here?" if the precise number of years were critically important, e.g., you are eligible for some benefit after living in a place for three years. But usually "how long" is the better option.

Past continuous tense expresses that an action happened over a period of time. A for preposition will tell how long. It's perfectly valid.

Comparing it with present continuous tense, present continuous in English is a bit weird, because it can be connected to an understood "shortly before and after now" period of time.

I am going to the store.

This means right now, you are on your way to the store (e.g. you have just left, or you are literally walking out the door to go to the store now). It can also mean you are about to go to the store in the very next moment.

I go to the store.

Simple present in English sounds like you are narrating actions as they happen, and sounds awkward if not in such a context.

You can qualify present continuous with for like past continuous. If you do this, you are usually saying how long something will be happening, or is expected to happen. It will mean a future time even though the tense is a present tense.

I am working for 2 hours, then coming home.

I am going to be on that job in 2 weeks.