Present Simple: I do, I do do. Present Continuous: I am doing. Present Perfect: I have done. Present Perfect Continuous: I have been doing. Past Simple: I did, I did do. Past Continuous: I was doing. Past Perfect: I had done. Past Perfect Continuous: I had been doing. Future Simple: I will do. Future Continuous: I will be doing. Future Perfect: I will have done. Future Perfect Continuous: I will have been doing.
