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 ...........................................................................................................................
Choose the correct words.
He saw a big fish while / as soon as he was swimming across the lake.
As soon as / While I saw it, I swam away.
When / While he saw the accident, he went to help.
My dad was waiting for me at the station when / while I arrived.
I kissed my grandmother as soon as / while she opened the door.
We were standing at the bus stop when I while it started to rain.
While / As soon as we were exploring the mountain, we saw a deer.
Elena fell over as soon as / while she was playing tennis.