We started living here fifteen years ago. → We have been living here for fifteen years.
When did you begin to learn English? → How long have you been learning English?
I last wrote a letter to my aunt in May. → I haven't written a letter to my aunt since May.
Mr. Minh began to collect stamps in 2000. → Mr. Minh has been collecting stamps since 2000.
Nga started learning French last year. → Nga has been learning French for a year.


I am at school now.
I have been to Ho Chi Minh City several times this year.
He left here three hours ago.
We haven't seen Peter since last Monday.
Tim was reading a book when I came to his house.
My brother usually plays badminton.
I was ironing my clothes at 7 o'clock yesterday evening.
My mother has learnt English for ten years.
How often do you go to the zoo?
The sun is rising in the East.