Forms

leave - left - left
tear - tore - torn (рвати)
[be] am/is/are - was/were - been
[go] go[es] - went - gone
fall - fell - fallen (падати)
feel - felt - felt

Usage

0:

• to ...
• will ...
• can ...
• must ...

1:

• present simple

2:

• past simple

3:

• present/past perfect
• passive

Present, Past, Future / Simple, Continuous, Perfect (Simple, Continuous)

Present Simple (факт)

Use do (does).

Examples:
She writes.
Does she write?

-.-.-.-.[now].-.-.-.->

Present Continuous (процес)

Use be (am, is, are) + -ing.

Examples:
She is writing.
Is she writing?

-----.[now].----->

Present Perfect Simple (посилання на факт)

Use have (has) + V3.

Examples:
She has just written.
I haven't watched TV for the last 10 years.

-.-.-.-.-.[now].----->

Present Perfect Continuous (процес у минулому)

Examples:
I have been working here for the last 10 years.

---.-.-.-[now]------>

Past Simple

Use did.

Future Simple

Use will + V1.

Past Continuous

Use was (were).

Future Continuous

Use will be.

Past Perfect Simple

Use had.

Future Perfect Simple

Use will have.