1. in front of 在……的前面（外部） in the front of 在……的前面（内部），下面我们就来说一说关于人教版英语初二下册三单元知识点?我们一起去了解并探讨一下这个问题吧!
人教版英语初二下册三单元知识点
Unit 3 What were you doing when the UFO arrived?1. in front of 在……的前面（外部） in the front of 在……的前面（内部）
2. in the library 在图书馆
3. get out of/get into 出……之外/进入
4. sleep late 睡懒觉 sleep well 睡得好 get to sleep=fall asleep 睡着
5. walk down/along 沿……走
6. take off (飞机)起飞；脱下（衣帽）
7. on Sunday evening 在星期日晚上
注意:（特指某日如星期、假日、某月某日或某个特定的上、下午、晚上用on）
8. in the tree在树上 on the tree在树上
9. take photos 照相
10. at the train station 在火车站
11. run away 跑开，逃跑
12. as adj原形 as 和…一样…
例如： She is (not) as beautiful as her sister. I can run as fast as he(him)
13. buy/draw/make sth. for sb. 为某人买/画/制作
14. walk home 走回家
15. in history 在历史上
16. for example 例如
17. in the city of 在……市
18. on the playground 在操场上
19. ten minutes ago 十分钟前
20. take place 发生（强调必然性）
21. happen to sth./sb. 发生（强调偶然性）
例如：What has happened to you?=What’s the matter with you?=What’s wrong with you?
22. of course=sure=certainly 当然
23. all over the world=around the world 遍及全世界
24. outside/inside the station 在车站外/内
25. next to 相邻，紧贴
26. close to 接近于；在附近
27. be ill in hospital/bed 生病住院/在床
28. hear about/of 听说（间接听到）
29. in silence 沉默不语 keep silent 保持沉默
30. an unusual experience 一次不寻常的经历
31. have fun doing sth 干某事有乐趣 have difficult time doing sth干某事有困难
32. have meaning to 对—有意义
33. become the first Chinese astronaut in space 成为中国第一个太空宇航员
34. a national hero 一个民族英雄 35. be famous all over the world 全世界出名
36. for the first time 第一次
本单元目标句型:
What were you doing when I arrived/at that time/at 8:00 last night/from 9:00 to 10:00 yesterday?
1. I was doing sth. When 一般过去时的时间状语从句...
2. How about... / What about...?
3. While sth./sb. was doing sth., I was doing sth....
4. 当不明飞行物着陆时，你正在干啥？What were you doing when the UFO landed?
5. 当妈妈正在做饭时，我在看电视。While my mother was cooking ,I was watching TV.
6. I was walking down the street when a UFO landed right in front of me.
7. You can image how strange it was.
8. I followed to see where it was going.
9. Isn’t that amazing!
10. She didn’t thinking about looking outside the station.
11.I was so tired this morning. It was difficult to get out of the bed.
12.Liu Xiang won the gold medal at the 2004 Olympics.
13.Beijng was made host to the 2008 Olympics.
14.People often remember what they were doing when they heard the news of important events in history.
15. This was one of the most important events in modern American history.
16.Even the most everyday activities can seem important.
17.Our teacher asked us to stop what we were doing and listen.
18.However, in more recent times, most Americans remember what they were doing when the World Trade Center in New York was destroyed by terrorists.
19.Not all events in history are as terrible as this, of course.
20. His flight around the Earth lasted about 22 hours.
本单元语法讲解
过去进行时（Past Progressive Tense）
句型 S was/were V-ing…
例A：She was doing her homework at 8:30 yesterday evening.
（昨天傍晚八点半她正在做家庭作业。）
例B：We were having supper at that time.
（那个时候我们正在吃晚饭。）
解说 如例1所示，在单句中使用过去进行时来表达时必须把该动作正在进行中的时间表明清楚，否则就不合逻辑了。例如：I was taking a bath yesterday. （错）
（昨天我正在洗澡——昨天24小时都正在洗澡吗？）
所以本句应该如例1来表达，或者用一般过去时表达如下：
I took a bath yesterday.（昨天我洗了澡。）
如果由上下文的文意，或者对谈中的话意可以了解“动作正在进行中的时间”，单句里就使用过去进行时来表达是很普通的，例如：
A：I called you up yesterday evening.
B：Did you? At what time?
A：At around ten o'clock. （大约在十点钟。）
B：Oh, I was taking a bath then.（哦，当时我正在洗澡。）
过去进行时在表达上常用的句式是如例2所示和另一个一般过去时的动作相搭配。请观察下面的图解说明：
过去有二动作A和B（如图示），在B动作发生时稍早发生的A动作正好在进行中，所以这种表达法通常都是复句（主句 副词从句）。例如：
When I got up this morning, Mother was preparing breakfast in the kitchen.
（今天早上我起床时妈妈正在厨房里准备早餐。—“Mother…。”是主句，“when…，”是副词从句。）
常用于修饰过去进行时的时间副词：过去的某一定点时刻（at 过去的时刻），then （= at that time）（那时，当时），all 时间，“When…/While…/As…”等副词从句，etc.
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