In Past perfect^x, Auxiliaries^x, Predicates^x

Mister Micawber wrote: Future Simple (I will sit) Future Continuous/Progressive (I will be sitting) Future Perfect (I will have sat") Present Simple (I sit) Past Simple (I sat) Past Continuous/Progressive (I was sitting) Past Perfect (I had sat) Past Perfect Continuous/Progressive (I had been...

Jack112 wrote: Sorry for my lack of understanding. Could you give me a few more examples as to how to distinguish between them? 1. I have never had more girlfriends than I have now. (Correct) 2. I have never had more girlfriends than I do now. (Is this one correct as well? How...