Yeterday,the day before yesterday,last night,last week,last month,last year,few year ago,last evening.
sub+v2+other words+timeframe for simple present (I,we,you,they)
1.The teacher taught a new lesson last friday
2.I visited Delhi last year.
sub+didn’t+v1+other words+timeframe for simple past(I,we,you,they,he,she,it)
1.Madhu didn’t attend the class yesterday.
2.My mother did not bake a cake on my birthday last year.
Did+sub+v1+other words+timeframe for simple past(I,we,you,they,he,she,it)
1.Did you watch T.V. yesterday?
2.Did your father send you money last month?
To question about an action that is complete or over
yesterday,the day before yesterday,last night,last week,last month,last year,few yearsago,last evening
1.I was a student of st.theresa’s School 10 years ago.
2.Mohan was absent last week.
1.I wasn’t aa teacher 10 years ago.
2.Mhoan and rajesh weren’t students of russell’s last year.
1.Was Madhu a chubby child?
2.Was Nargis a good actress?
To indicate profession,qualification and designation.
To indicate a person in the past.
To indicate quality.(past)
To indicate relationship.(past)
To indicate age.(past)
To indicate time,date,day&cost.
I+was+v1 ing+other words+specific time in the past
We,you,they+were+v1 ing+other words+specific time in the past
He,she,it+was+v1 ing+other words+specific time in the past
1.I was watching TV at 6last evening.
2.We were having dinner when my friend came.
I+wasn’t+v1+ing+other words+specific time in the past
We,you,they+weren’t+v1ing+other words+specific time in the past
He,she,it+wasn’t+v1ing+other words+specific time in the past
were+you.they,v1ing+other words+specific time in the past
Was+he,she,it+v1ing+other words+specific time in the past
1.Was it raining when you out last evening?
2.Was your friend studying when you went to his house last night?
1.To question an action which was going on when another action happened.
2.TO talk about an action which was at a specified time.