资源简介

(共16张PPT)
必修一
Unit 4 Natural Disasters
Part 1 Listening and Speaking
What’s going on in this photo
What kind of disaster is it
What may happen in this disaster
A team of soldiers are rescuing somebody from a collapsed building.
An earthquake (because there are ruins, injured people and soldiers).　
Vehicles may be damaged. The buildings may be completely destroyed by it. Although some people may survive, others may be injured or killed.
Look at the photo on the Opening Page and answer the following questions.
【词汇清障】
1.a natural ________　　　　　 一场自然灾害
2.a small ________ 一场小龙卷风
3.a severe ________ 一场严重的干旱
4.cause a _________ 引起山体滑坡
5.news about the _______ 有关洪水的消息
6.volcanic _________ 火山喷发
7.a 7.8-magnitude ___________ 一场7.8级地震
8.the _______ workers 救援人员
9.________ the buildings 毁坏楼房
disaster
tornado
drought
landslide
floods
eruption
earthquake
rescue
damage
10.________ lots of homes 摧毁大量房屋
11.almost 88,000 people _________ 大约88 000人撤离
destroy
evacuate
点击图片播放视频
tornado
tsunami
earthquake
wildfire
flood
Watch the video Natural Disasters and look at the photos. Write down the names of these disasters.
earthquake tornado wildfire
drought landslide tsunami
flood volcanic eruption
Listen to the news reports and tick the disasters that you hear.
Listen for details
Think about what you are listening for before you listen: numbers, dates, times, addresses, activities, people or places, reasons, etc.
Go through the learning strategy.
Question Type of information Answer
1. What was the magnitude of the earthquake in Ecuador number
2. How many people were killed or injured in Ecuador
3. Where are the floods
4. What are the rescue workers and soldiers doing in the flood-hit area
5. When did people see the tornado in Memphis
6. Which buildings were damaged in Seoul
7. What caused the landslide in Seoul
About 230 people were killed and more than 1,500 were injured.
7.8
central China
They are working day and night to make sure that people are safe.
at 9:25 a.m.
a library and a supermarket
the heavy rain that has fallen in the last week
number
place
activities
time
place
reason
Circle the key word(s) in the questions below and write the kind of information they refer to. Then listen again and answer the questions.
A flood in Colombo, Sri Lanka, has killed 82 people. The flood, which began in May, has affected nearly 500,000 people. Rescue teams are providing food and water, and shelters have been set up by the government.
Read about the disasters below and prepare a short news report on one of them. Then present your news report to a partner.
【语音技巧】
　　辅音按照发声时声带的振动模式分为清辅音和浊辅音。
　　清辅音:发音时声带不振动;
　　浊辅音:发音时声带振动。
1.清辅音和浊辅音的发音技巧
辅音类别 示例
/p/ pay,peach,supply,speed,spend
/t/ foot,sit,team,table,student,stop
/k/ kiss,class,clock,cat,sky,skirt
/f/ life,first,fast,father,far,photo
/s/ face,stop,study,star,sad,nice
/ / fish,wish,wash,shirt,short
/θ/ three,thank,mouth,tooth,think
/h/ home,horse,house,he,his,him
/tr/ tree,try,train,trip,true,street
/t / cheap,chair,check,child,watch
清辅音
辅音类别 示例
/b/ bee,buy,but,black,blue,basket
/d/ dog,do,sad,bad,dad
big,get,good,guest,glass
/v/ very,never,five,fever
/z/ busy,easy,nose,zero
/ / usual,pleasure,decision
/ / that,these,there,father,brother
/r/ red,room,run,right,rat,rose
/dr/ driver,dress,draw,dry
/d / large,cage,bridge,change,job
注意 (1)在/s/后/p/要读成相应的浊辅音/b/ (2)在/s/后/t/要读成相应的浊辅音/d/ (3)在/s/后/k/要读成相应的浊辅音
浊辅音
2.以-ed结尾的单词的发音规律
(1)在清辅音/p//t//k//f//s//h/等后读/t/,如:watched, marked,finished,stopped,cooked等。
(2)在浊辅音 /v//z//r//m//n/等后或元音后读/d/,如:cleaned,played,prepared等。
(3)在/t//d/后读/Id/,如:painted,started,visited,minded等。
pipe brick tend death keen glory
fond view think they campus amaze
flash garage French bridge truly draw
events friends
Listen and repeat. Pay attention to the letters in bold.
/ d/
/t/
/d/
begged breathed described concentrated confused debated
exchanged helped laughed learned depended embarrassed
pretended reserved shocked viewed watched wished
begged, breathed, described, confused, exchanged, learned, reserved, viewed
helped, laughed, embarrassed, shocked, watched, wished
concentrated, debated, depended, pretended
Read the words aloud. Pay attention to the pronunciation of the -ed endings. Then write the words in the boxes.
1. 在清辅音/p/、/t /、/k/、/f/、/s/、/ /等后读/t/，如：
helped、laughed、embarrassed、shocked、watched、wished。
2. 在浊辅音和元音/b/、/ /、/g/、/v/、/z/、/n/等后读/d/，如：
begged、breathed、described、confused、exchanged、learned、
reserved、viewed。
3. 在音标/t/、/d/后读/ d/，如:concentrated、debated、depended、
pretended。
Read the words aloud. Pay attention to the pronunciation of the -ed endings. Then write the words in the boxes.
/d/
begged, breathed, described, confused, exchanged, learned, reserved, viewed
/t/
helped, laughed, embarrassed, shocked, watched, wished
/ d/
concentrated, debated, depended, pretended
Listen to the words in each box and repeat.

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