人教版八级下英语第八单元第三课时课件.ppt

1、Read the following sentences we have seen.1：Have you read Little Women yet?Yes,I have./No,I havent.2：Has Tina read Treasure Island yet?Yes,she has.She thinks its fantastic.:3：Have you decided which book to write about yet?Yes,I have.Ive already finished reading it.1：我们已经看过：我们已经看过爱丽丝梦游仙境爱丽丝梦游仙境这部电影了。

2、这部电影了。We have already seen Alice in Wonderland.2：这个女孩已经看过鲁滨逊漂流记这本书了。：这个女孩已经看过鲁滨逊漂流记这本书了。The girl has already read Robinson Cruson.3：他们都已经读过：他们都已经读过小妇人小妇人这本书了。这本书了。They have already read Little Women.4：我还没有完成数学作业。：我还没有完成数学作业。I havent finished math homework yet.5：她还没有读完：她还没有读完金银岛金银岛这本书。这本书。She hasnt f

3、inished reading Treasure Island yet.6：我们的父母都还没有去过北京。：我们的父母都还没有去过北京。Our parents havent gone to Beijing yet.7：你已经吃过早餐了吗？是的。：你已经吃过早餐了吗？是的。Have you eaten breakfast yet?Yes,I have.8：这个女孩已经决定读：这个女孩已经决定读雾都孤儿雾都孤儿这本小说吗？不，还没有这本小说吗？不，还没有Has the girl decided to read Oliver Twist?No,she hasnt9：他们都曾经听说过这个故事吗？：他们都

4、曾经听说过这个故事吗？是的。是的。Have they ever heard of the story?Yes,they have.现在完成时态的构成：现在完成时态的构成：现在完成时是由现在完成时是由“助动词助动词have/has+动动词的过去分词词的过去分词”构成的，规则动词的过构成的，规则动词的过去分词构成与过去式相同，不规则动词去分词构成与过去式相同，不规则动词的过去分词则需逐个记忆。的过去分词则需逐个记忆。动词的过去式的变化和过去分词的动词的过去式的变化和过去分词的变化并不完全相同。我们对它们作了一变化并不完全相同。我们对它们作了一个大致的分类。个大致的分类。(注：例子中单词的变注：例子

5、中单词的变化顺序为：动词原形化顺序为：动词原形 动词的过去式动词的过去式 动词的过去分词动词的过去分词)一、过去式和过去分词的变化相同一、过去式和过去分词的变化相同规则变化规则变化：1.一般在动词词尾直接加一般在动词词尾直接加ed。如：。如：pick picked picked;wish wished wished;stay stayed stayed2.以不发音的以不发音的e结尾的动词后面加结尾的动词后面加d。如：。如：like liked liked;hope hoped hoped;phone phoned phoned3.以以“辅音字母辅音字母+y”结尾的动词，变结尾的动词，变y为为i

6、，再加再加-ed。如：。如：study studied studied;hurry hurried hurried;reply replied replied4.词尾只有一个辅音字母的重读闭音节动词尾只有一个辅音字母的重读闭音节动词，要双写辅音字母，再加词，要双写辅音字母，再加-ed。如：。如：stop stopped stopped;clap clapped clapped不规则变化：不规则变化：5.以不变应万变以不变应万变。如：。如：let let let;put put put;read read read6.若中间有双写若中间有双写e，则去掉一个，则去掉一个e，单词，单词末尾再加末尾再

7、加t。如：。如：feel felt felt;keep kept kept;sleep slept slept7.结尾的字母结尾的字母d变变t。如：。如：lend lent lent;build built built;send sent sent8.变为以变为以-ought或或-aught结尾结尾。如：。如：buy bought bought;bring brought brought;catch caught caught;teach taught taught 4a Use the words in brackets to complete the conversations.1.A:W

8、ould you like something to drink?B:No,thanks._.(just/drink some tea)2.A:I heard you lost your key._?(find)B:No,not yet.Ive just drunk some teaHave you found it yet3.A:Do you know when Tom is leaving?B:_.(already/leave)A:When _?(leave)B:This morning.4.A:Is your sister going to the movies with us toni

9、ght?B:No._.(already/see the film)He has already leftdid he leaveShe has already seen the film5.A:What do your parents think about our plan?B:I _.(not/tell them/yet)havent told them yet4b Fill in the blanks with the correct forms of the words in the brackets.Sally _(love)reading.In the morning she re

10、ads the newspaper and in the evening she reads books.She _ already _(read)more than 100 different books.Her favorite kind of books is science fiction.She is interested in science and technology and loves to imagine what the world _(be)like in 50 years.loveshasreadwill be She _(finish)reading a book

11、about robots last week and _(write)a book report about it next week for her French class.Every time she is in the library,Sally looks at the many books she _(not read)yet and she cant wait to read them.finishedwill writehasnt readDo you know the movie Lost in Thailand?Yes.I _ it twice.Its funny.A.sa

12、w B.see C.have seen D.will see Lunch?No,thanks.I _.A.will eat B.am eating C.have eatenWhere is Tom?We cant find him anywhere.Perhaps he _ home.A.has come B.is going C.went D.was going1：我已经读过鲁滨逊漂流记这本书。：我已经读过鲁滨逊漂流记这本书。2：他们都已经离开上海了。：他们都已经离开上海了。3：李磊还没有看过：李磊还没有看过爱丽丝梦游仙境爱丽丝梦游仙境这本书。这本书。4：我们还没有告诉他们这个故事。：我们还没有告诉他们这个故事。5：你已经给你的父母打电话了吗？不，还没有。：你已经给你的父母打电话了吗？不，还没有。6：你的叔叔已经去上海了吗？是的。：你的叔叔已经去上海了吗？是的。