THE PAST SIMPLE → THE PRESENT PERFECT
( QUÁ KHỨ ĐƠN → HIỆN TẠI HOÀN THÀNH )
I/ S + began/started + Ving/to V1 + time + ago
<-> S + have/has + V3 .. + for + time
1. They started building this school two years ago.
-) They have built this school for two years.
2. Nam began to fix his bike 20 minutes ago.
-)Nam ____________________________
3. When did you begin collecting stamps ?
-)How long __________________________ ?
4. They have learnt Japan for three months.
-) They started __________________________
2. Nam has fixed his bike for 20 minutes
3. How long have you collected stamps?
4. They started to learn Japan 3 months ago.
2. Nam began to fix his bike 20 minutes ago.
è Nam _____have fixed his bike for 20 minutes _________
3. When did you begin collecting stamps ?
è How long _____have you collected stamps_____________________ ?
4. They have learnt Japan for three months.
è They started ____learning Japanese 3 months ago __________