When or While

1

100

I was drinking coffee at 8pm last night.

the sentence is past continuous or past simple?

past continuous

200

I _____ (drink) coffee at 8pm last night.(past continuous)

was drinking

300

They were playing football when one player fell on the ground. 

background(背景动作，延续性动作)

actions happen in one moment(瞬间动作，打断动作）

They were playing football-背景，延续性动作

one player fell on the ground-瞬间，打断动作

400

While he _______ (walk) his dog, he ____ (run)into a stranger.

was walking;ran

2

100

I played with my dog just now.

Past simple or past continuous?

past simple

200

He _____(write) his homework last Saturday.(past simple)

wrote

300

While we were eating dinner, many guests arrived.

背景、延续性动作

瞬间、打断动作

we were eating dinner-背景、延续性动作

many guests arrived-瞬间、打断动作

400

May _______ (practice)her piano when her mom _____ (ask) her to eat dinner.

was practicing;asked

3

100

We usually use ________ (when/while)before past simple, and use _________ （when/while）before past continuous.

when while

200

They _____(walk)with the dog just now (past continuous)

were walking

300

We ________ (drink) coffee when she broke a cup.

were drinking

4

100

Correction.

I were working on your painting last night.

I was ...

200

We ______ (go)to the beach last weekend.(past simple)

went

300

When we _________ (meet) him last night, he was working on his project.

met

5

100

Correction.

Were she dancing with her sister yesterday night?

Were改成Was

200

He _____ (call) me to cancel a meeting.(past simple)

called

300

While Tony _________ (prepare) his lunch, he cut his finger.

was preparing