- An idea occured to him that she herself had helped himvery much in the everyday life.
- We had had lunch when she arrived.
- Yesterday, I went out after I had finished my homework.
( 5 sao nhé)

Past perfect ( Thì quá khứ hoàn thành )
- I met them after they had divorced each other.
- Lan said she had been chosen as a beauty queen two years before.
- No sooner had he returned from a long journey than he was ordered to pack his bags.
Simple past ( Tthì quá khứ đơn )
- When I was having breakfast, the phone suddenly rang.
- He visited his parents every weekend.
- If I were you, I would do it.