I.1. Tom has played football for 2 years.

2. They have been building this house for 2 months.

3. We have written this letter since yesterday.

4. He has painted the picture since last week.

5. They have studied Math since last year.

6. Mary has driven a car for 20 years.

7. Peter has walked in the park for 2 months.

8. They have taken part in this team for 2 years.

9. My mother has worked in Hanoi for 20 years ago.

10. Tom has smoked since he was young.

II.

1. I haven't used this car before.

2. He hasn't cleaned his car before.

3. Ba hasn't worn jeans before.

4. We haven't had a big party before.

5. John hasn't visited Hue before.

6. This is the first time that I have eaten pizza.

7. This is the first time that Mary has worn Ao Dai.

8.This is the first time Tom has played football.

9. This is the first time Daisy has read the novel.

10. This is the first time that John has visited Vietnam.

=>
1. Tom has played football for 2 years.
2. They have built this house for months.
3. We have written this letter since yesterday.
4. He has painted this picture since last week.
5. She has studied Maths since last year.
6. Mary has driven a car for 20 years.
7. Peter has walked in the park for 2 months.
8. They have taken part in this team for 2 years.
9. My mother has worked in HN for 20 years.
10. Tom has smoked since he was young.

10 câu trên là dạng viết lại câu chuyển từ QKĐ sang HTHT

Công thức HTHT : have/has V3/ed (for + khoảng time/since + mốc thời gian)