...PAST SIMPLE AND PAST CONTINUOUS...

·Past simple is with the second form of the verb, is when the action was finish.

Afirmatives sentences:

EX: I song in a karaoke

Negatve sentences: You use did + not.

EX: I didn't sing in a karaoke

Interrogative sentences: You use did.

EX: did I sing in a karaoke?

*Past continuous*: We use the past of "to be" + "ing".

Afirmative sentences: Past of "to be"+"ing".

I was singing in a karaoke.

Negative sentences: Past of "to be"+"not"+"ing".

I wasn't singing in a karaoke.

Interrogative sentences: Past of "to be"+"ing".

Was I singing in a karaoke?

PRESENT SIMPLE AND CONTINUOUS

Description P.Simple : We use the simple present for things that are true in general or for things that happened

EX: Afirmatives sentences

Use: In positive sentences it use with the verb form in present.

He works in a office

EX: Negative sentences

Use: we use do or does and not

He doesn't work in a office

EX: Interrogative sentences

Use: we use do or does

Does he work in a office?

Desdription present continuous: We use present continuous for things that are happening now.

EX: Afirmatives sentences
Use: In positive sentences it use with the verb "to be" + "ing".
He is working in a office.

EX: Negative sentences
Use: we use verb "to be"+"not" + "ing".
He isn't working in a office.

EX: Interrogative sentences
Use: we use "to be" + "ing".
Is he working in a office?