Question

structure of
simple present
present continous
present perfect
present perfect continous

Answer 1

structure of simple present is verb1 or s/es

structure of present continuous is is/am/are v1 ING

the structure of present perfect is has/ have + v3

the structure of present perfect continuous is has/have been v1 ING

I have written it by myself please mark it as the brainllist if it will help you......................................

Answer 2

Simple present : subject + v1 + object
Present continuous : subject + is / am / are + verb + ing + object
Present perfect : subject + have / has + v3 + object
Present perfect continuous : subject + have / has been + verb + ing + object