Simple past tense

- - Did + ( sub ) + Verb-1 ?

- - sub + Verb-2.

     Sub + did not + verb-1.
      

• I went to school yesterday.
• Did you go to school yesterday ?
• I did not go to school yesterday.
• She cooked the curry last night.
• Did she cook the curry last night ?
• He worked last week.
• They left last month.

                           Past continuous tense

- -was/were + ( sub ) + verb-ing ?

- sub + was/were + ( not ) + verb-ing.

• When I got my home, my father was watching the TV.
• While they played football, we were learning English.
• I waved to Maung Maung but he wasn‟t looking at.