Present Simple Tense
Our grocer sells good tea.
Do the students understand the lesson?
Who breaks this window?
Present Continuous Tense
The teacher is teaching the students.
The gardener is cutting the grass.
Is Jim doing his homework?
Present Perfect Tense
The little girl has dropped the toy.
Has the postman delivered any letters ?
We have not seen our father for years.
I have written several letters.
Past Simple Tense
The policeman caught the thief.
Did you eat all the oranges ?
The dentist pulled out one of my teeth last week.
The teacher punished me when I talked in class.