The present simple is often used to talk about routines or general facts. The past simple is often used to talk about specific past actions and past routines.
SUBJECT + V-ED (I watched)
SUBJECT + DIDN'T + V (I didn't watch)
DID + SUBJECT + V (Did you watch?)
Present: She watches a movie every Friday.
Past: She watched a movie every Friday. (She might not watch them any more.)
Present: Tom doesn't go to Bangkok very often.
Past: Tom didn't go to Bangkok last week.
Present: I don't eat meat.
Past: I didn't eat meat yesterday.
Present: Do you go fishing?
Past: Did you go fishing?
- I play football.
I football yesterday.
- John and Tim don't like the restaurant.
John and Tim the resaurant.
- She helps at the homeless shelter every Saturday.
She at the homeless shelter every Saturday last year.
- He doesn't work on the weekend.
He on the weekend.
- Do you study for tests?
you for the test?>
Don't use DID with the BE verb.
Use was or wasn't with I, he, she, and it.
Use were or weren't with you, we, and they.
Present: He is happy.
Past: He was happy.
- I am tired.
- The dog is not friendly.
The dog friendly.
- There are 1000 people at the concert.
There 1000 people at the concernt.
- Is he your classmate?
he your classmate?
- They are not expensive.