Simple Present and Simple Past

Simple Present

1. (+) I buy a flower in the market every morning
    (-) I don't buy a flower in the market every morning
    (?) Do I buy a flower in the market every morning?

2. (+) She visits her grandma every sunday
    (-) She doesn't visit her grandma every sunday
    (?) Does she visit his grandma every sunday?

3. (+) He drinks coffee every night
    (-) He doesn't drink coffee every night
    (?) Does he drink coffee every night?

4. (+) We come to the museum every month
    (-) We don't come to the museum every month
    (?) Do we come to the museum every month?

Simple Past

1. (+) They went to the zoo last holiday
    (-) They didn't go to the zoo laast holiday
    (?) Did they go to the zoo last holiday?

2. (+) He gave some roses to his girlfriend yesterday
    (-) He didn't give some roses to his girlfriend yesterday
    (?) Did he give some roses to his girlfriend yesterday?

3. (+) I studied english last night
    (-) I didn't study english last night
    (?) Did I studiy english last night?

4. (+) My mother boought a new bag last week
    (-) My mother didn't buy a new bag last week
    (?) Did my mother buy a new bag last week?