1、Unit I Past and present,Grammar,Do you still remember the following sentences? Have a try! 你看见我的食物了吗？ 你已经吃了我的食物！ 你变了！ 从我出生我就住在这儿。 从那时起我们就住在这个地区。,Revision,The Present Perfect Tense (现在完成时),一、现在完成时的含义,现在完成时用来表示之前已发生或完成的动作或状态，其结果和现在有联系，动作或状态发生在过去但它的影响现在还存在；也可表示持续到现在的动作或状态；还可以表示一个动作到现在为止发生了多少次。,二、现在完成时的
2、构成,现在完成时的肯定句句型: 主语（第一、二人称单复数）+ have +过去分词,We have lived in Nanjing for 10 years.,e.g. I have finished my report.,主语（第三人称复数） +have + 过去分词 e.g. They have moved away. 主语（第三人称单数） +has +过去分词 e.g. He has been in Beijing for two months.,2. 现在完成时的否定句句型主语+have/has+ not+过去分词e.g. I have not seen the film yet.H
3、e hasnt been to Tianjin since then.,3. 现在完成时的一般疑问句句型 Have/Has+主语+过去分词Have you.? Has he.?Yes, I have. Yes, he has.No, I havent. No, he hasnt.,三、现在完成时的时间副词和时间短语,1. 副词already和yet。already一般用于肯定句中，yet一般用于否定句和 疑问句中。如: We have already finished our homework. 我们已完成作业了。,They havent finished their homework yet
4、.他们还没有完成作业。,- I have never watched the World Cup.我从未看过世界杯。,2. 副词ever 和never。多用于否定或疑问句中，表示“曾经”或“从未“等。 如: - Have you ever watched the World Cup?你曾经看过世界杯吗?,He has been there twice the last few days. 近几天他去过那里两次了。,3. 用表示到说话时为止的时间状语, 如 : just, before, up to now, the past/last few years等。 如: I have seen he
5、r before, but I can not remember where. 我以前见过她，但记不起在哪里见过。,如: I havent seen him for two years.I havent seen him since 2 years ago.Its 2 years since I saw him.我两年没有见过他了。,4. 表示动作或状态从某一时刻开始，一直持续到现在的时间状语: so far, for+ 一段时间, since +过去时间或一般过去时的句子。,四、过去分词的构成,travelled,moved,stayed,owned,learned,visited,stop
6、ped,finished,shopped,solved,A. 规则动词的过去分词,We add -ed to regular verbs.,B. 不规则动词的过去分词,thought,caught,given,made,written,put,cost,grown,hurt,run,felt,fallen,flown,had,drunk,brought,worn,sung,forgotten,kept,动词原形 动词过去式 动词过去分词 A B B bring brought brought A B C do did done A A A let let let A B A come came
7、 come A A B beat beat beaten,Page 122-123,Finish P14 Part A,Mr Wu asks the students to complete the sentences below using the present perfect tense. Help them complete the sentences.,1. They _ (finish) their homework already. 2. John _ never _ (visit) China. 3. Mr Li _ (repair) over ten bicycles sin
8、ce Monday. 4. We _ (not see) each other for years.,have finished,has visited,has repaired,havent seen,5. My parents _ (not come) back yet. 6. Our teacher _ (teach) us a lot about the history of China.,havent come,has taught,Millie and Sandy are talking about a film about the history of Beijing. Comp
9、lete their conversation with the correct forms of the verbs in brackets.,Millie: _ you _ (see) any films recently, Sandy? Sandy: No, I havent. What about you? Millie: I _ (see) one last Saturday. Sandy: Whats it about?,Have seen,saw,Millie: Its about the changes in Beijing over the past century. From this film, I _ (learn) more about Beijings past and present. Sandy: Oh, I think I _ (hear) about the film. Do you plan to see it again? Millie: Yes, Id like to.,have learnt,have heard,
