3 we have flown to Singapore for 5 years
-> thì HTHT + for
-> s + have / has + VPII + for + 1 khoảng thời gian
4 i haven't cut my hair since november
-> thì HTHT + since
-.> s + have / has + VPII + since + 1 mốc thời gian
5 we haven't called each other for 5 months
-> thì HTHT + for
-> s + have / has + VPII + for + 1 khoảng thời gian
6 we haven't met for a long time.
-> thì HTHT + for
-> s + have / has + VPII + for + 1 khoảng thời gian
7 how long have you had it
-> thì HTHT
-> s + have / has + VPII
8 i have never eaten such a delicious meal before
-> thì HTHT
9 the last time I saw him was 8 days ago
-> thì QKĐ
10 it is four days since I took a bath
-> sau since + thì QKĐ
