III. Transformation
(Simple past vs Past perfect)
1. Alex phoned the police. He saw the accident.
→ As soon as ..........................................................................................................................
2. The police arrived so late, so the robbers escaped.
→ By the time ........................................................................................................................
3. I turned off the lights. After that I left the room.
→ Before ..................................................................................................................................
4. Everyone went home and afterwards this message arrived.
→ After ......................................................................................................................................
5. Michael worked as a physicist after graduating from the university.
→ After ......................................................................................................................................
6. He left school and then joined the army.
→ After ......................................................................................................................................
7. Mary finished her homework and then went to bed.
→ Before ..................................................................................................................................
(Áp dụng những thì khác)
8. The frying fan caught on fire. I was making dinner at that time.
→ While ....................................................................................................................................
10. The flood raced down the valley and destroyed everything on its path
→ When ....................................................................................................................................
9. I talked to Laura. This made me feel less nervous.
→ Since .....................................................................................................................................
11. Ms. Johnson will return your call. She’ll have some free time.
→ As soon as ..........................................................................................................................
12. Susan sometimes feels nervous. She chews her nails.
→ Whenever ...........................................................................................................................
1. Alex phoned the police. He saw the accident.
→ As soon as Alex saw the accident, he phoned the police ..........................................................................................................................
2. The police arrived so late, so the robbers escaped.
→ By the time .......................the police arrived, the robbers had escaped.................................................................................................
3. I turned off the lights. After that I left the room.
→ Before ..........................I left the room, I had turned off the lights........................................................................................................
4. Everyone went home and afterwards this message arrived.
→ After ........everyone had gone home, this message arrived. ..............................................................................................................................
5. Michael worked as a physicist after graduating from the university.
→ After ..............................Micheal had graduated from the university, he worked as a physicist ........................................................................................................
6. He left school and then joined the army.
→ After .........................he had left school, he joined the army. .............................................................................................................
7. Mary finished her homework and then went to bed.
→ Before ..........................Mary went to bed, she had finished her homework ........................................................................................................
(Áp dụng những thì khác)
8. The frying fan caught on fire. I was making dinner at that time.
→ While I was making dinner, the frying fan caught on fire ....................................................................................................................................
10. The flood raced down the valley and destroyed everything on its path
→ When ...................................the flood raced down, it destroyed everything on its path .................................................................................................
9. I talked to Laura. This made me feel less nervous.
→ Since ........................I I talked to Laura, I feel less nervous. .............................................................................................................
11. Ms. Johnson will return your call. She’ll have some free time.
→ As soon as .....................Ms Johnson has some free time, she will return your call. .....................................................................................................
12. Susan sometimes feels nervous. She chews her nails.
→ Whenever ................Susan feels nervous, dhe chews her nails. ...........................................................................................................