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小升初英语专项复习讲与练（通用版）-[第9讲] 拨开云雾见时态（五）-过去进行时（含答案）
大显身手
过去进行时
结构
was
doing
were
Xiao Pang was sleeping at this time on June 6th.
两大用法
描述过去某个时刻正在进行的动作
标志词：at this time yesterday at 9pm the day before yesterday
Tom was catching Jerry at this time yesterday.
描述过去某个时段正在进行的动作
标志词：the whole morning all day yesterday from nine to ten last night
I was reading Harry Potter all day yesterday.
They were singing from nine to ten last night.
when & while
when后可长亦可短，while之后只可长
When the thief came in, I was sleeping.
The thief came in, when I was sleeping.
The thief came in, while I was sleeping.
若是两个都为长，while来把纽带当
While the thief was carrying the TV out, I was sleeping.
The thief was carrying the TV out, while I was sleeping.
While grandma the newspaper, gra ndpa the f lowers.
A．read, was watering B．was reading, watered