Past simple

Use: 
Use the past simple to talk about finished events in the past. Use it to tell stories, jokes and anecdotes.

Form:
1)            Many past tense verbs are formed by adding -ed to the end of the verb.
want      =>           wanted
start       =>           started

If a verb ends in e, just add d (liked, hoped).
If a verb ends in y, delete y and add ied (studied, carried). But don’t do this if the verb ends in a vowel + y(played, NOT plaied. stayed, NOT staied)

But a lot of past tense verbs are irregular. You need to learn each one separately. Here are some examples.
have      =>           had                        make     =>           made
take       =>           took                       sit           =>           sat
get         =>           got                         feel        =>           felt

Past simple verbs are the same for all persons. 
I went; you went; he went; she went; they went; we went...    

2)            Form negatives this way:

I, you, he , she, we, they...

didn’t

infinitive verb know, see, go

Don’t use the past verb in negative sentences.
I didn’t had dinner.         =>           I didn’t have dinner.

3) Form questions this way:

Did

I, you, he , she, we, they...

infinitive verb know, see, go

Common mistakes:
Some students use the past verb in questions.
Did you saw the film?     =>                           Did you see the film?