Ex1:
1. They (go) went home after they (finish) had finished their work.
2. She said that she (already, see) already had seen Dr. Rice.
3. After taking a bath, he (go) had gone to bed.
4. He told me he (not/eat) hadn't eaten such kind of food before.
5. When he came to the stadium, the match (already/ begin) already had began
6. Before she (watch) watched TV, she (do) had done homework.
7. What (be) had been he when he (be) was young?
8. After they (go) had gone I (sit) sat down and (rest) rested
9. Yesterday, John (go) had gone to the store before he (go) went home.
10. She (win) had won the gold medal in 1986.
Ex2:
1. David had gone home before we arrived.
⇒ After David had gone home, we arrived.
2. We had lunch then we took a look around the shops.
⇒ Before we took a look around the shop, we had had lunch.
3. The light had gone out before we got out of the office.
⇒ When we got out of the office, the light had gone out.
4. After she had explained everything dearly, we started our work.
By the time we started our work, she had explained everything clearly.
5. My father had watered all the plants in the garden by the time my mother came home.
⇒ Before my mother came home, my father had watered all the plants.
Ex3:
1. Before they came to visit my grandparents, I have already cleaned the house
⇒ had
2. After jimmy had gone home,I was doing shopping
⇒ did
3. She had come to the cinema before I do
⇒ did
4. When they arrived, John goes away
⇒ had gone
5. I had prepared for the exam and am ready to do well.
⇒ was
