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Jane was running while Maria was swimming.
Sally was dancing while Michael was singing.
Example:
Darren was reading when Michael came in.
read / come in
watch / ring
write / knock at
Kangkang was watching TV when the telephone rang.
Kangkang and Jane were writing when Michael knocked at the door.
Maria was swimming while Jack was .
Kangkang and Jane were writing when Michael
at the door.
(run) _________动词
(knock) _________动词
时态用：_________
时态用：_________________
持续性
短暂性
进行时
现在时/过去时
“当…的时候”
他回来的时候我会告诉你的。
I will let you know ________ he comes back.
昨天的这个时候我正在听音乐，而妈妈正在厨房做饭。
I was listening to music ________ mom was cooking in the kitchen at this time yesterday.
when
while
Diana
Lily
4