1.When you phoned me,it was my lunchtime.
-> When you phoned me, I was having lunch
2. Jack left the office before I arrived there.
-> When I arrived at the office, Jack had left
3. I have studied English for three years.
-> We started to study English for three years.
4. Sue cleaned the house. Then she fell asleep on the sofa.
-> After Sue had cleaned the house, she felt asleep on the sofa.
5. Brian bought a new television. First she checked all the prices.
-> Before Brian bought a new television, he had checked all the prices
Công thức câu 4 với câu 5 nè:
• After + S+ had V3/ V-ed
• Before= by the time + S+ V2/ V-ed
CHO MÌNH CÂU TRẢ LỜI HAY NHẤT NHAAAA