`1`. We were having dinner when my dad arrived home.

`-` Thì QKTD với when 

`2`. The phone rang when I was trying to sleep.

`-` Try + To V : Cố gắng để làm gì

`3`. As she was climbing up , she fell

`-` Fall - Fell - Fell : Rơi xuống

`4`. You were shopping when I tidied your room

`-` Tidy (v) : Dọn dẹp

`5`. The boat was sailing towards to shore when it hit some rocks

`-` Shore : Bờ biển

`-` Toward : Với

`*` Cấu trúc thì QKTD với when : S + was / were + Ving + O when + S2 + V ( ed / irre ) + O

`*` Cấu trúc thì QKTD với while : S + Ved / Irre + O while S2 + + was / were +Ving + O

$#Ninetales$