8A Unit 8词组、句型复习提纲
二、重点句子及句型：
1.My house is all wet.
我的房子都潮湿了。

2.I was sleeping when it started to rain.
开始下雨时我正在睡觉。

3.Didn’t you hear the rain?
难道你没听到雨声吗?
4.There was water everywhere.
到处都是水。

5.Who will mop up the water if I go home without you?
谁将把水拖干如果没有你我回家?
6. A young boy fall from a tree and hurts his legs.
小男孩从树上掉下并伤了腿。

7.Lightning starts a big fire in the classroom building.
闪电击使教学楼着火了。

8.Lightning hit a classroom building and it caught fire.
闪电击中教学楼并着火了。

9.People were running in all directions while pieces of glass and bricks were falling down .
当玻璃碎片和砖块落下来的时候，人们朝四面八方跑去。

10.I felt nervous and my heart was beating fast.
我感到紧张并且心跳很快。

11. A moment of fear went through my mind，but I told myself to calm down since I was
still alive.
片刻的恐惧掠过我的大脑,但我告诉自己冷静下来因为我还活着。

12.I started to pull myself slowly through the dark.
我开始在黑暗中慢慢地向前移动身体。

13.I heard shouts from excited people
我听到兴奋的人们发出的叫喊声。

14.The earthquake hit Taiwai in 1999.
1999年台湾发生了地震。

15.What a terrible snowstorm !
多么可怕的暴风雪!
16.Try to get out as soon as possible
尽快逃出去。

17.Cover your mouth and nose with a wet towel to protect yourself from thick smoke.
用一个湿毛巾捂住嘴巴和鼻子以防浓烟。

18.Stay low to the ground.
身体下低贴近地面。

19.Never go back into the building on fire.
不要回到（进入）着火的大楼。

20.Don’t walk through the flood water.
不要穿过洪水。

21.Hide under a strong desk to protect yourself.
藏在结实的桌子底下以保护自己。

22.Look left, right and then left when you cross the road.
过马路时，先左看，右看，再左看。

23.Don’t walk or ride your bicycle on railways.
不要在铁路上行走或骑车。

24.We learnt a lot about keeping ourselves safe from fires, flood, earthquake and traffic
accidents.
我们学到了许多关于保持自己安全远离火灾、洪水、地震和交通事故的东西。

25.Do you know what to do first when we burn ourselves?
当我们烧伤自己时，你知道我们先做什么？
26.You should keep your hand in cold water for about ten minutes.
把手放入冷水达10分钟。

27. A snowstorm hit Beijing.
一场暴风雪袭击了北京。

28.Suddenly, a strong wind came from behind.
突然,一阵大风从后面刮来。

三、语法
1．过去进行时
过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作，常和表过去的时间状语连用。

如：at that time／moment, (at) this time yesterday (last night/Sunday/week...), at+点钟+yesterday(last night/Sunday.).
过去进行时的构成：
肯定形式：主语+was/were+v．-ing。

否定形式：主语+was not(wasn't)／were not(weren't)+v．-ing。

疑问形式：Was/Were+主语+v．-ing。

如：
I was doing my homework at this time yesterday.
昨天的这个时候我正在做家庭作业。

They were waiting for you yesterday.
他们昨天一直在等你。

2．when，as和while的用法区别
(1)while只表示一段时间，while引导的时间状语从句中的动词必须是延续性动词，且主句的动作在从句动作的发生过程中发生或主从句两个动作同时发生。

如：
He was talking to me while he was watching the TV. 他一边和我说话，一边看电视。

(2) when既可以表示具体的时间点，也可以表示一段时间，它所引导的从句的动作可以发生在主语动作之前，也可以是发生在后。

当从句中都是延续性动作时，when与while可替换。

如：
When I came into the room, I found him lying there asleep.
当我走进房间时，我发现他正躺在那儿睡觉。

Mary was having dinner when I saw her.
当我看见玛丽的时候，她正在吃晚饭。

(3) as多用于平行结构，表示两个动作同时发生，一个主语同时进行两个动作，一种状态随另一种状态的变化而变化。

从句中多用表示动作的动词，而不用be动词或表示感觉、理解、知道这类动词。

如：
As he stood there, he saw two men enter the bar.
当他站在那儿时，他看见两个人走进了酒吧。

She dropped the glass as she stood up.
当她站起来的时候，她碰落了玻璃杯。

The students took notes as they listened.
学生们一边听讲一边记笔记。

(4)表示主句的动作发生在从句的较长动作过程中，when，while，as均可使用。

从句中为be 动词时，多用when和while。

谈论两个同时进行的长动作可用while，谈论两个平行动作或两种状态变化多用as。