EX2: Phân biệt HTĐ và HTHT 1. A: I (cycle/ just) 50 km
2. B: I (cycle) 100 km last week. 3. A: I (write) an essay yesterday. 4. B: I (write/ already) two essays this term. 5. A: I (ring/ just) my friend. 6. B: I (ring) my friend 10 minutes ago.
7. A: Two days ago, I (watch) a Madonna concert on TV.
8. B: I (see/ already) Madonna live in concert.
9. A: I (spend) my summer holiday in Australia last year. 10. B: I (be/ not) to Australia yet.
`1. A:` I (cycle/ just)have just cycled 50 km.→HTHT
`2. B:` I (cycle)cycled 100 km last week.→QKĐ
`3. A:` I (write)wrote an essay yesterday.→QKĐ
`4. B:` I (write/ already)have already writtentwo essays this term.→HTHT
`5. A:` I (ring/ just)have just rung my friend.→HTHT
`6. B:` I (ring)rung my friend 10 minutes ago.→QKĐ
`7. A:` Two days ago, I (watch)watched a Madonna concert on TV.→QKĐ
`8. B:` I (see/ already)have already seen Madonna live in concert.→HTHT
`9. A:` I (spend)spent my summer holiday in Australia last year.→QKĐ
`10. B:` I (be/ not)have been to Australia yet.→HTHT
1. have just cycled ( có ‘just’ ⇒ HTHT )
2. cycled ( có ‘last week’ ⇒ QKĐ)
3. wrote ( có ‘yesterday’ ⇒ QKĐ )
4. have already written ( có ‘already’ ⇒ HTHT )
5. have just rung ( có ‘just’ ⇒ HTHT )
6. rang ( có ‘ago’ ⇒ QKĐ )
7. watched ( có ‘two days ago’ ⇒ QKĐ )
8. have already seen ( có ‘already’ ⇒ HTHT )
9. spent ( có ‘last year’ ⇒ QKĐ )
10. haven’t been ( có ‘yet’ ⇒ HTHT )