`1,` My sister was knitting while I was weaving

- QKTD while QKTD

- Diễn tả hai hành động đang diễn ra đồng thời trong quá khứ

`2,` When my brother was in England, he often ate fish and chips

- When QKĐ, QKĐ 

- Trong câu, được dùng để kể hồi ức trong quá khứ

`3,` Minh wishes he would visit Stonehenge one day

- Câu ước - TL : S + wish(es) + (that) + S + would/could + V0

- Mong ước sẽ xảy ra trong tương lai

`4,` When I visited the town, the authority was preserving the monument

- When QKĐ, QKTD

- Diễn tả hành động dang xảy ra thì hành động khác chen vào

`5,` I wish I had enough free time to watch that soap opera

- Câu ước - HT : S + wish(es) + (that) + S + V2/ed ...

- Mong ước trái với thực tế ở hiện tại

`6,` At `9pm` last night, my elder sister was writing in her diary

- DHNB : at `9pm` last night -> QKTD

- KĐ : S + was/were + V-ing ...

`7,` We were talking about our field trip next weekend at `8am` last Sunday

- DHNB : at `8am` last Sunday -> QKTD