1、Topic 3 The world has changed for the better,Section C,Unit 1 The Changing World,現(xiàn)在完成時用法二,從過去開始的動作一直持續(xù)到現(xiàn)在。（與一段時間連用）,一段時間,for+一段時間,since+時間點(diǎn),yesterday，2014,last+時間名詞,一段時間+ago,句子（過去時）,動詞,延續(xù)性動詞,非延續(xù)性動詞,可以與since, for, how long 引導(dǎo)的一段時間連用,不可以與since, for, how long 引導(dǎo)的一段時間連用,若要 連用,轉(zhuǎn)換為延續(xù)性動詞,3.延續(xù)性動詞與非延續(xù)性動詞之間的轉(zhuǎn)

2、換：,、用相應(yīng)的延續(xù)性動詞； buy - borrow - put on - catch/get a cold - come/go/become -,have,keep,wear/be in,have a cold,be,、轉(zhuǎn)換成 be名詞/介詞,join,be in+組織/機(jī)構(gòu),be a member of+組織/機(jī)構(gòu),、轉(zhuǎn)換成be + adj./adv. :,die - finish - begin/start - leave () - close - open - fall asleep - marry -,be dead be over be on be away (from) be

3、closed be open be asleep be married,Jobs died in 2011/5 years ago. (用現(xiàn)在完成時改成同義句),Jobs has been dead for five years .,since 2011.,since 5 years ago.,die-be dead,Tiangong Two left the earth on Sep.15th,2016. (用現(xiàn)在完成時改成同義句),Tiangong Two has been away from the earth for 6 days .,since Sep.15th,2016.,sinc

4、e 6 days ago.,leave()-be away(from),Tiangong number two space experiment apparatus 天宮二號空間實驗室,去年的錢該還我了吧?,我躲。,He borrowed his money last year/one year ago. (用現(xiàn)在完成時改成同義句),borrow-keep,He has kept his money for a year .,since last year.,since one year ago.,New words,When something bad happens， we can go

5、to the emergency_.,shelters,A home is a safe place.,Whatever you do, wherever you go and however you are, your home will always be your shelter.,What is your shelter?,ever,who,where,when,how,what,Whatever,pron.無論什么，不管什么,無論,什么,怎么樣,什么時候,哪里,誰,New words,However perfect it is, I will not buy it.,_ you go

6、, I will find you.,Wherever,value,v.重視，珍視 n.價值,valuable adj. 有價值的,New words,One of the most basic human needs is a home.,Almost everyone values his home.,on purpose,故意，有意地,1.The man takes away the womans chair on purpose.,2. The two girls helped the old woman do some cleaning on purpose .,New words,

7、People think of her as Chinas diving queen.,認(rèn)為是,homeless people,1.Have you ever seen any homeless people? Where? 2.What do you think of the homeless people? 3.What can we do to help them?,Pre-reading,1b Read 1a and choose the best title.,A Serious ProblemHomelessness The Causes and Effects of Homele

8、ssness A Home is a Safe Place,Read and answer the questions. 1.What is one of the most basic human needs ? 2.Do all the people have their homes around the world ?,Paragraph 1,One of the most basic human needs is a home.,No, while most people around the world value their homes , there are many people

9、 in every country who are homeless .,adj.基本的，基礎(chǔ)的,n.人,Some people are homeless for a short period of time because_ and_,Paragraph 2,they are moving from one place to another,other people are not able to find a home.,Read and fill in the blanks.,n.一段時間，時期,Read and list the reasons for the homelessness

10、. 1._ 2._ 3._ 4._,Paragraph 3,They do not earn enough money .,They do not have a job.,They have a problem with drugs .,They have a mental illness.,the causes of,Read and fill in the blanks. _ the cause of homelessness is , the effects are the same. Homeless people must _ very hard to live. They can

11、not _ their children. Sometimes they must _ food just to eat. The government in every country has worked _ many years to _ the homeless but more needs to be done. We must think of the homeless _ people, not just as problems.,Paragraph 4,Whatever,work,raise,steal,for,support,as,1c Read 1a again and c

12、omplete the table.,moving from one place to another,not able to find a home,not earn enough money,not have a job,a problem with drugs,a mental illness,work very hard to live,can not raise their children,must steal food just to eat,1a Read and understand.,1d Read 1a again and answer the questions.,Wh

13、at does the phrase “on purpose” mean according to the context? What does the word “support” mean according to the context? Have governments done enough to help the homeless people? What else can we do to help them?,故意，有意地,支持,養(yǎng)活,No, the government needs to do more.,According to 1a and fill in the bla

14、nks.,1. One of the most _ human needs in a home. 2. Most people in the world _ their homes. 3. Some people are homeless for a short _ of time. 4. No one is ever homeless on _. 5. _ the cause of homelessness is , the effects are the same. 6. Homeless people sometimes _ food just to eat. 7. The govern

15、ment in every country has worked for many years to _ the homeless but more needs to be done.,basic,value,period,purpose,Whatever,steal,support,Retell it,2 Work in groups. Look at the pictures and discuss the causes and effects of homelessness, child labor, or war. The following may help you.,homeles

16、s people,A: What are the causes of ? B: There are many causes of Some causes are A: What are effects of ? B: Whatever the cause is, the effects are re the same /The effects are different. Some are A: What have governments /people done to help? B: They have A: Have they done enough? B: A: What can we

17、 do now? B: ,child laborers,cruel wars,3 Write a Cause and Effect passage based on 2. The sentences below may help you .,The world has many problems such as _. Some causes of _ are _. _ happens because _. Some effects of _ are _ and _. The governments have _. People have _. There is hope that there will be less _ in the future.,The world is becoming better and better. But it still has many problems. For example, therere many homeless people all over the