I haven't seen him for 8 days.

-The last time I saw him 8 days ago.

I haven't seen him for 2 months.

- I last seen him 2 months ago.

I haven't been to a concert for over the year.

-The last time I was to a concert was over the year ago.

The last time I really enjoyed my sealf for your brithday party.

- I haven't enjoyed my sealf since your birthday party.

It's nearly 20 years since my father saw his brother.

-My farher hasn't saw his brother for 20 years.

I haven't played football since 2000

- The last time I played football in 2000.

I haven't been to HCM city for 2 years.

-The last time I was to HCM city 2 years ago.

I've never met such a famous person before

-It's the first time I have met such a famous person

She hasn't seen that boy her before

-It's the first time she has seen that boy.

She started writing the letter to him last week

-She had wrote the letter to him for a week.

1) The last time I saw him 8 days ago

2) I last seen him 2 months ago

3) I haven't enjoyed my sealf since your birthday party

4) My father hasn't saw his brother for 20 years

5) The last time I played football in 2000

6) The last time I was to Ho Chi Minh city 2 years ago

7) It's the first time I have met such a famous person

8) It's the first time she has seen that boy

9) She had wrote the letter to him for a week