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1、 Unit 3 Online ToursUnit 3 Online Tours Grammar Grammar I like travelling.I went to Australia 4 years ago.I have lived in Nanjing for 30 years.Simple past tensePresent perfect tenseDifferences?pastpresent4 years agoExample 1:Rule1：We use the simple past tense to tell what happened in the past.用一般过去时
2、讨论用一般过去时讨论过去发生过去发生的事情。的事情。When did I go to Australia?I went to Australia 4 years ago.I have lived in Nanjing for 30 years.Example 1:pastpresentRule2：We use the present perfect tense to talk about an action that starts in the past and continues to the present.用现在完成时谈论一个动作用现在完成时谈论一个动作发生在过去并持续到现在发生在过去并
3、持续到现在。I started to live in NJ 30 years ago.I still live in NJ now.for 30 years I want to take beautiful photos when travelling.I bought a camera last month.I have bought a camera.It means that I bought a camera and I can use it to take some beautiful photos now.Rule3：We use the present perfect tense
4、 to talk about the result of an action.用现在完成时谈论一个动作所产生用现在完成时谈论一个动作所产生的结果或对现在的影响。的结果或对现在的影响。Example 2:Example 3:I dream of traveling around the world.I visited Japan in 2010 and 2016.I have been to Japan twice.pastpresent20102016Rule4:We use the present perfect tense to talk about how many times an a
5、ction has happened till now.用现在完成时谈论一个动作用现在完成时谈论一个动作到目前为止发生的到目前为止发生的次数次数。I went to Japan for the first time.I went to Japan for the second time.Sum up differences in usage:用法不同用法不同to tell what happened in the past.强调动作发生强调动作发生在过去在过去 Simple past tense 1.to talk about an action that starts in the past
6、 and continues to the present.强调动作从过去开始一直强调动作从过去开始一直持续到现在持续到现在Present perfect tense 2.to talk about the result of an action.强调动作产生的强调动作产生的影响影响3.to talk about how many times an action has happened till now.强调到目前动作发生的强调到目前动作发生的次数次数Simon also likes travelling.He has already visited many places.Where di
7、d he visit?I _(visit)the Palace Museum with my grandparents the other day.I _(climb)Mount Huang last summer.visitedclimbed Where did Simon visit?a few days agoI am happy that I _(learn)to swim._ you ever _(try)the famous Tianjin Baozi?Have triedhave learnt Where did Simon visit?He can swim now.Sum u
8、p differences in adverbials of time:时间状语不同时间状语不同Simple past tensePresent perfect tenseyesterday morninglast monthtwo years agojust nowthe other dayin 2007alreadyyeteverjustrecentlyso fartill nowup to now1.I _(finish/just)my homework.Millie _(finish)her homework 20 minutes ago.2.I _(write)an email to
9、 my friend yesterday.Daniel _(write/already)two emails.have just finishedfinishedwrotehas already writtenPlease make sentences with the correct tenses.3.I _(be)in Hainan last month.Some of our classmates _(not be)to Hainan yet.4.I _(live)in Sunshine Town since I was born.Daniel _(live)in Nanjing in
10、2007.washave not been have livedlivedMillie wants to visit Nanjing.But she has never been there.She is asking Simon about the city.Millie wants to visit Nanjing.Millie:_ (you/be/ever)to Nanjing?Simon:Yes.I_(be)there three times.Millie:When _(you/go)there last?Simon:Last summer.I _(spend)a week there
11、.Millie:_(you/like)it?Simon:Oh yes.I _(have)a great time there.I _(visit)many places of interest and _(eat)lots of local food.Millie:Lucky you!I _(be/never)there.Have you ever been to have beendid you go spent Do you like had visited ate have never been Millie dreams of travelling around the world.B
12、ut she doesnt have a passport.If you were Millie,how would you solve this problem?Millie had an online tour of the USA.be buy read return see showSaturday,15 MarchHave you ever dreamt of travelling around the world without a passport?Yes,you can realize your dream by taking an online tour.Yesterday
13、Daniel(1)_ me an online tour of the USA.I(2)_ never _ so many wonderful pictures before.Last week,I(3)_ a book about the places of interest in the USA.I(4)_ 20 pages already.Its really interesting.My dad(5)_ just _ from the USA,but I(6)_ never_ there.I hope I can visit the USA some day.showedhave se
14、enhaveboughthave readhasreturnedbeenA:Which city have you ever been to?B:I A:Who did you go there with?B:I A:When did you go there?B:I A:What did you do there?B:I Talk about your travel experience.Write down your travel experiences.Main points:Which city have you ever been to?Who did you go there wi
15、th?When did you go there?What did you do there?Pay attention to using simple past tense and present perfect tense.The world is big.The life is short.Enjoy travelling.Enjoy your life.Homework:Homework:Use the simple past tense and the present perfect tense to write about the online tour of New York.THANK YOU FOR L I S T E N I N G