PRESENT

Continuous - to be + doing

Действие, происходящее в данный момент.

I am working.

He is working.

We are working.

You are working.

They are working.

Simple - do, don't + do; doesn't + do

Повторяющееся действие.

I work. - I don't work.

He works. - He doesn't work.

We work. - We don't work.

You work. - You don't work.

They work. - They don't work.

PERFECT - have, has + ed; have, has + V3

Действие закончилось к данному моменту: результат, законченность

I have worked. I have shown. - I haven't worked.

He has worked. He has shown. - He hasn't worked.

We have worked. We have shown. - We haven't worked.

You have worked. You have shown. - You haven't worked.

They have worked. They have shown. - They haven't worked.

PERFECT CONTINUOUS - have been, has been + for / since

Действие, начавшееся в указанный момент и совершается (продолжается) до другого момента

I have been talking to John for two hours / since 5 o'clock.

He has been talking to John for two hours / since 5 o'clock.

We have been talking to John for two hours / since 5 o'clock.

You have been talking to John for two hours / since 5 o'clock.

They have been talking to John for two hours / since 5 o'clock.