Chuyển đổi từ HTHT sang QKĐ:
1.This is the first time he went abroad.-> He hasn't..gone abroad before..
2.She started driving 1 month ago.->She has..driven for 1 month..
3.We began eating when it started to rain.->We have.eaten when it has rained..
4.i last had my hair cut when i left her.->i haven't.cut my hair when I left her..
5.The last time she kissed me was 5 month ago.->She hasn't..kissed me for 5 months..
6.it is a long time since we last met.->We haven't..met for a long time.
7.When did you have it ?.->How long.have you had it?...
8..This is the first time i had such a delicious meal.-> i haven't..had such a delicious meal before.
9. i haven't seen him for 8 days.->The last.time I saw him 8 days ago..