[词汇]
dinning room(hall) 饭厅
coin n. 硬币
mouth n. 嘴
swallow v. 吞下
later adv. 后来
toilet n. 厕所，盥洗室
过去进行时和过去完成时
现在进行时，一般过去时，现在完成时，过去进行时，过去完成时
过去进行时表示的概念
1 在过去某个特定的时间正在进行或发生的动作。
2 当过去的一个动作发生的时候另外一个动作正在进行。
结构：
主语+ was（were）+ doing
I was sleeping at eight o'clock yesterday morning.
They were swimming in the river at three o'clock yesterday afternoon.
at this time 这个时候
I was walking in the street at this time last week.
I was leaving the house when he arrived.
when 当……的时候
while 当……的时候（强调两个动作的同时进行）
just as 正当……
I cut myself while I was shaving.
I cut myself badly while I was shaving.
过去完成时：过去某个特定的时间之前动作已经完成。过去两个动作的比较，发生在前面的是过去完成时，后面的是一般过去时。
结构：
主语 + had + 动词的过去分词
I had read five books by the end of last year.
term
learnt
The students had learnt two thousand words by the end of last term.
before, after
Mr.Smith bought a new car after he had sold his old car.
We had had dinner before they arrived.
When I was leaving the house he arrived.
When I was having breakfast, someone knocked at the door.
ring, rang
The telephone rang just as I was opening the door.
slip 滑倒
hurt 伤着
get off the bus 下公共汽车
When she was getting off the bus, she slipped and hurt herself.
My wife was cooking in the kitchen while I was working in the garden.
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