Past continue

When/we/arrive/at the station/the train/wait/for them

`\color{#145277}{N}\color{#246483}{a}\color{#34768F} {e}\color{#44889B}{u}\color{#539AA7}{n}`

 `=>` When we arrived at the station, the train was waiting for them

`@` When + QKĐ, QKTD

`=>` Diễn tả `1` HĐ đang xảy ra thì `1` HĐ khác xen vào

When we arrived at the station, the train was waiting for them.

`-` When + QKĐ, QKTD: Một hành động xen vào hành động khác trong quá khứ.

`->` QKTD: `(+)` S + was/were + Ving.

`->` QKĐ: `(+)` S + V2/ed.