`1.` arrived - was talking - started

`->` Mệnh đề có từ when , chúng ta thường chia động từ không phải dạng tiếp diễn.

`=>` Thì QKĐ

`2.` was lying/rang/stopped

`->` Ở đây có từ ''after'' thuộc thì QKĐ 

`3.`was - left - fell

`->` Mệnh đề có từ when (như câu `1` )

`=>` Thì QKĐ

`4.`came - seemed - enjoyed

`->` Other day thuộc thì quá khứ đơn

`5.`saw - was standing - was having

`->` Mệnh đề có từ when ( Như câu `1.` )

`1`. When John arrived (QKĐ) at home, Anna was talking (QKTD) to some one on the phone. Jonh started (QKĐ) to get the tea.

`2.` I was lying (QKTD) in the bath when the phone rang (QKĐ). It stopped (QKĐ) after a few rings.

`3.` It was (QKĐ) cold when we left (QKĐ) the house that day, and a light snow fell (QKĐ).

`4.` Your friend who came (QKĐ) here the other day seemed (QKĐ) very nice. I enjoyed (QKĐ) meeting her.

`5.` When I saw (QKĐ) the man, he was standing (QKTD) outside the bank. He was having (QKTD) a black baseball cap on.

Thì QKĐ: S + V-ed/Vp2  +O

Thì QKTD: S + was/were  +V-ing + O