Question

easiest way to learn all tenses.

Answer 1

make an effective flow chart, remember some sentences for each it may help in efficient learning..

Answer 2

Remember the form like -

pr.simple - takes / take
pr.continous - is taking
pr.perfect - has taken
pr.per.cont - has been taking

Remember that in continuous form always use ( ing ) form . In Present also and past also .

And in passive always v3 is used .