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(共29张PPT)
Unit 6 When disaster strikes
Starting out
思维品质
学习能力
文化意识
语言能力
通过教学活动的开展，培养学生对语法现象分析、推断和归纳的思维能力，能够在语法学习的过程中做到举一反三。
学生能够识别语篇中的过去进行时；总结和归纳过去进行时的用法；培养独立思考和自主探究的学习能力。
通过本节课的学习，学生能够了解不同的自然灾害，学会冷静地面对自然灾害。
学生能够正确认读和拼写本节课的重点词汇和语法；能够就本课时的主题进行流畅的交流和探讨。
Learning Objectives
adj. 丢失的，遗失的
n.地，地面
adj. 害怕的，恐惧的
v(使)关(合)上,(使)关闭
adj. 惊人的，骇人的
n. 公共马车
adv 笔直地，成直线地
n.沙滩
n. 洪水，水灾
adj. 浓密的;混浊的
New Words
lost
ground
scared
shut
shocking
coach
straight
sand
flood
thick
We often hear about natural disasters in the news. in this unit, let’s explore natural disasters. What may happen in a natural disaster How do disaster warnings help How can people get back to their lives after disasters By the end of this unit, you will make a poster about a natural disaster.
After completing the unit, you will be able to:
use words and expressions in the unit to talk about natural disasters.
use the past continuous tense to tell natural disaster stories.
describe ways of saving lives.
What are you going to learn in this unit
Natural disaster
Influence of natural disasters
Disaster warnings
Getting back to
life after disasters
Make a poster about
natural disaster
What can you see in the picture
I can see the firemen putting out the fire.
(答案不唯一)我能看到消防员正在灭火。
1.Look at the pictures and answer the questions.
Do you know the stories in the pictures
Which natural disasters could they relate to
Yes. They are Nǔ Wa Repairs the Sky.
Nǔ Wa Repairs the Sky is about a big disaster in the sky.
1.Look at the pictures and answer the questions.
Do you know the stories in the pictures
Which natural disasters could they relate to
Yes. They are
Yu the Great Controls theFlood.
Yu the Great Controls the
Flood is about floods.
1.Look at the pictures and answer the questions.
Do you know the stories in the pictures
Which natural disasters could they relate to
Yes. They are Hou Yi Shoots the Suns.
Hou Yi Shoots the Suns is about heat and drought.
2.Look at the picture and answer the questions.
What kind of natural disasters do you know
Earthquake
Drought
Flood
Hurricane
Wildfire
Tsunami
2.Look at the picture and answer the questions.
How has people’s understanding of natural disasters changed
2 In the past, people thought disasters were punishments. Now, we know they’re natural events. We use science to study and deal with them to keep ourselves safe.
(答案不唯一,范例仅供参考)
Grammar
过去进行时
一般来说，要表示过去某个时刻或某一时段正在进行的动作，我们常使用过去进行时。常和过去进行时连用的时间状语有：then, at this/that time, yesterday, at... last night等。
- What were you doing at 7 am yesterday
昨天早上7点你在做什么？
- I was having breakfast. 我在吃早餐。
过去进行时
过去进行时除了表示"过去某时刻/时段在做某事"之外，还常常出现在讲故事的语境中，请看下面的句子：
Alice was sitting with her sister by the river.
艾丽斯正和姐姐坐在河边。
They were having a tea party in the garden.
他们正在花园里举行茶会。
过去进行时
过去进行时句子中的谓语部分由"was/were+动词现在分词"构成，与现在进行时结构相似，只是现在进行时中的am/is/are变成了was/were。由此可以推断，过去进行时的句式变化也与现在进行时的一样。过去进行时的结构分为：肯定句、否定句、一般疑问句和特殊疑问句。
过去进行时
过去进行时的结构
肯定句：主语 + was/were + 现在分词（-ing）+ 其他.
She was singing when I entered the room.
我进房间时，她正在唱歌。
They were arguing about the movie last night.
昨晚他们一直在争论那部电影。
过去进行时
过去进行时的结构
否定句：主语 + was/were + not + 现在分词（-ing）+ 其他.
He wasn't paying attention during the meeting.
开会时他根本没在听。
We weren't joking—this is serious!
我们没开玩笑，这是认真的！
过去进行时
过去进行时的结构
一般疑问句：Was/Were + 主语 + 现在分词（-ing）+ 其他
Were you still doing your homework when I called you last night
昨晚我给你打电话时，你还在写作业吗？
Was the baby crying loudly when the earthquake started
地震开始时，婴儿正在大哭吗？
过去进行时
过去进行时的结构
特殊疑问句：疑问词（What/Where/Why等） + was/were + 主语 + 现在分词（-ing）
What were you doing at 10 AM yesterday
昨天上午10点你在干什么？
Why was she crying in the hallway 她为什么在走廊里哭？
过去进行时
过去进行时和一般过去时虽然都表示过去发生的事情，但是过去进行时强调过去某一时刻或时段正在进行或持续的动作；一般过去时表示过去的时间里所发生的动作，所表示的动作往往已经完成。
Laura was reading a novel at eight o'clock last night.
昨晚8点Laura在看小说。
Laura read a novel last night. 昨晚Laura看了一本小说。
过去进行时
过去进行时常和at, yesterday morning, at that time, at... last night等时间状语连用。其实，过去进行时还可以和when, while, as引导的表示过去的时间状语从句连用，形成复合句。
One day, when Henry was working in a restaurant, a snake suddenly appeared.
一天，当Henry正在餐馆里工作时，一条蛇突然钻了出来。
过去进行时
过去进行时还可以和when, while, as引导的表示过去的时间状语从句连用，形成复合句。
While people were waiting for the traffic lights, a car suddenly appeared round the corner.
就在人们等待红绿灯的时候，一辆汽车突然从拐角处驶出。
As the doctors were checking him, the pain got worse.
医生给他做检查时，疼痛加剧了。
过去进行时
when和while引导的从句与过去进行时连用的几种情况：
when引导的时间状语既可以指时间点，也可以指时间段，动词可以是终止性动词，也可以是延续性动词；while引导的时间状语只指时间段，动词必须是延续性动词。
They arrived while we were having dinner. 我们吃饭时他们到了。
= They arrived when we were having dinner.
过去进行时
when和while引导的从句与过去进行时连用的几种情况：
由when引导的时间状语从句，如果主句用过去进行时、从句用一般过去时，则表示一个动作正在进行的时候另一个动作(突然)发生了，强调后一动作发生的突然性。
We were talking when the teacher came in.
我们正在讲话，老师(突然)进来了。
过去进行时
when和while引导的从句与过去进行时连用的几种情况：
该句也可以用while表达，但与用when表达有细微的区别，请注意体会：
While we were talking, the teacher came in.
我们正在讲话的时候，老师进来了。
(只表明老师进来的事实，不强调突然性)
过去进行时
当主句和从句的动作都是延续的或同时发生的，两句都用过去进行时的时候多用while引导。
They were singing while we were dancing.
他们在唱歌，我们在跳舞。
While I was cooking, my brother was setting the table.
我在做饭时，我弟弟在摆餐具。
Homework
Review the key words, expressions, sentence patterns and grammar in today's lesson.
Make five sentences with the grammar in today's lesson.
Thank you！

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