be
was/were/been
eat
ate/eaten
I eat sweets today.
I ate sweets yesterday.
I ate sweets yesterday.
I didn't eat sweets yesterday.
Yes, I went to school.
Did you go to school?
drink
drank/drunk
go
went/gone
Mary drinks tea with lemon.
Mary drank tea with lemon.
Mary drank tea with lemon.
Mary didn't drink tea with lemon.
No, I didn't take medicine.
Did you take medicine?
do
did/done
give
gave/given
Anna sings a song.
Anna sang a song.
Anna sang a song.
Anna didn't sing a song.
Yes, I did my homework yesterday.
Did you do your homework?
take
took/taken
have
had/had
A doctor gives me some medicine.
A doctor gave me some medicine.
A doctor gave me some medicine.
A doctor didn't give me some medicine.
No, I didn't sing a song.
Did you sing a song?
sing
sang/sung
write
wrote/written
Sam writes a book.
Sam wrote a book.
Sam wrote a book.
Sam didn't write a book.
Yes, I had a headache.
Did you have a headache?