I don't master you don't master he doesn't master we don't master you don't master they don't master
Present continuous
I'm not mastering you aren't mastering he isn't mastering we aren't mastering you aren't mastering they aren't mastering
Preterite
I didn't master you didn't master he didn't master we didn't master you didn't master they didn't master
Preterite continuous
I wasn't mastering you weren't mastering he wasn't mastering we weren't mastering you weren't mastering they weren't mastering
Present perfect
I haven't mastered you haven't mastered he hasn't mastered we haven't mastered you haven't mastered they haven't mastered
Present perfect continuous
I haven't been mastering you haven't been mastering he hasn't been mastering we haven't been mastering you haven't been mastering they haven't been mastering
Pluperfect
I hadn't mastered you hadn't mastered he hadn't mastered we hadn't mastered you hadn't mastered they hadn't mastered
Pluperfect continuous
I hadn't been mastering you hadn't been mastering he hadn't been mastering we hadn't been mastering you hadn't been mastering they hadn't been mastering
Future
I won't master you won't master he won't master we won't master you won't master they won't master
Future continuous
I won't be mastering you won't be mastering he won't be mastering we won't be mastering you won't be mastering they won't be mastering
Future perfect
I won't have mastered you won't have mastered he won't have mastered we won't have mastered you won't have mastered they won't have mastered
Future perfect continuous
I won't have been mastering you won't have been mastering he won't have been mastering we won't have been mastering you won't have been mastering they won't have been mastering
Conditional
Present
I wouldn't master you wouldn't master he wouldn't master we wouldn't master you wouldn't master they wouldn't master
Present continuous
I wouldn't be mastering you wouldn't be mastering he wouldn't be mastering we wouldn't be mastering you wouldn't be mastering they wouldn't be mastering
Past
I wouldn't have mastered you wouldn't have mastered he wouldn't have mastered we wouldn't have mastered you wouldn't have mastered they wouldn't have mastered
Past continuous
I wouldn't have been mastering you wouldn't have been mastering he wouldn't have been mastering we wouldn't have been mastering you wouldn't have been mastering they wouldn't have been mastering