Past Continuous:

I was studying when my friend called me.She was cooking dinner when the power went out.

Present Continuous:

I am currently working on a new project.They are watching a movie at the moment.

Future Continuous:

Tomorrow at this time, I will be flying to Spain.By the time you arrive, I will be finishing my presentation.

Past Perfect:

She had already left by the time I got there.They had finished their homework before dinner.

Present Perfect:

I have never been to Paris.He has already eaten lunch.

Future Perfect:

By next month, I will have completed my degree.They will have moved to a new house by the end of the year.