đặt câu 1 past continous (4 câu) - - - - 2when /wlile diễn tả 1 hành động đang xảy ra(qktd) thì 1 hành động khác chen ngang(qkd)(4 câu ) - - - - diễn tả 2 hành độn xảy ra cùng 1 thời điểm(qktd) (4 câu ) - - - - when con được sự dụng để diễn tả 2 hành động xảy ra theo thứ tự (qkd )(4 câu ) -- - - -

1 past continous (4 câu)

- In 1988, she was working at the factory.

- At this time last weekend, we were camping in the forest.

- At this time, in 1999, he was going on a trip to his house.

- At 4 p.m. last Saturday, they were watering their garden.

2 when /while diễn tả 1 hành động đang xảy ra (qktd) thì 1 hành động khác chen ngang (qkd)

(4 câu )

- When we were playing badminton at 4:15 p.m., there were crows flew over ours. 

- When I was watering the garden, he came here.

- When she was working in the factory, her mother called.

- When he was going on a trip to his house, there was an accident happened.

3 diễn tả 2 hành động xảy ra cùng 1 thời điểm(qktd) (4 câu )

- My young brother was playing computer games while I was reading a book.

- He was watching TV while I was studying.

- While they were cooking, somebody was going into their house.

- While my teacher was checking my homework, I was talking to my friend.

4 when còn được sự dụng để diễn tả 2 hành động xảy ra theo thứ tự (qkd ) (4 câu )

- When the rock concert by Zack ended, we went home.

- She took a rest when the plane took off.

- When I came out of my home, my phone rang.

- He bought something when the plane landed.