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1、Topic 3 The world has changed for the better,Section C,Unit 1 The Changing World,现在完成时用法二,从过去开始的动作一直持续到现在。（与一段时间连用）,一段时间,for+一段时间,since+时间点,yesterday，2014,last+时间名词,一段时间+ago,句子（过去时）,动词,延续性动词,非延续性动词,可以与since, for, how long 引导的一段时间连用,不可以与since, for, how long 引导的一段时间连用,若要 连用,转换为延续性动词,3.延续性动词与非延续性动词之间的转
2、换：,、用相应的延续性动词； buy - borrow - put on - catch/get a cold - come/go/become -,have,keep,wear/be in,have a cold,be,、转换成 be名词/介词,join,be in+组织/机构,be a member of+组织/机构,、转换成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. (用现在完成时改成同义句),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. (用现在完成时改成同义句),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 天宫二号空间实验室,去年的钱该还我了吧?,我躲。,He borrowed his money last year/one year ago. (用现在完成时改成同义句),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.无论什么，不管什么,无论,什么,怎么样,什么时候,哪里,谁,New words,However perfect it is, I will not buy it.,_ you go
6、, I will find you.,Wherever,value,v.重视，珍视 n.价值,valuable adj. 有价值的,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.,认为是,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，基础的,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.一段时间，时期,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,养活,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.,homeless people,A: What are the causes of ? B: There are many causes of
