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武安市第十一中学武安市第十一中学 彭国栋彭国栋Learning aims:1.理解现在完成时态的用法和构成。2.会用现在完成时态做简单的提问和回答。3.掌握过去分词的构成规则。4.用现在完成时态写一篇过去和现在对比的文章。Read the following sentences we have seen.Have you read Little Women yet?Yes,I have./No,I havent.Has Tina read Treasure Island yet?Yes,she has.She thinks its fantastic.Have you decided which book to write about yet?Yes,I have.Ive already finished reading it.It was really good.用法用法 表示过去发生或已经完成的某一动作表示过去发生或已经完成的某一动作 对现在造成的影响或结果。对现在造成的影响或结果。e.g.Have you had your lunch yet?Yes,I have.Ive just had it.(现在现在 我不饿了。我不饿了。)时间状语时间状语already,yet,just,ever,never,beforealready和和yet都可以作为现在完成时的标都可以作为现在完成时的标志词，但它们的用法不同。志词，但它们的用法不同。already一般用于肯定句中一般用于肯定句中。如：。如：We have already cleaned up our classroom.注意：注意：already用于疑问句中时通常表用于疑问句中时通常表示惊奇示惊奇。如：。如：Have you finished your homework already?I cant believe it.yet一般用于疑问句和否定句中一般用于疑问句和否定句中。如：。如：Have you seen her yet?The bus hasnt come yet.构成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。构成的。在现在完成时的各种结构中，在现在完成时的各种结构中，have，has均为均为助动词助动词，无实际意义，只起构成时，无实际意义，只起构成时态的作用，态的作用，不可省略不可省略。当主语是。当主语是第三人第三人称单数称单数时助动词用时助动词用has，其余人称一律用，其余人称一律用have。句式句式1.肯定句：主语肯定句：主语+have/has+过去分词过去分词 (+其他其他)2.否定句：主语否定句：主语+have/has+not+过去过去 分词分词(+其他其他)3.一般疑问句：一般疑问句：have/has+主语主语+过去过去 分词分词(+其他其他)答语：肯定回答：答语：肯定回答：Yes,主语主语+have/has 否定回答：否定回答：No，主语，主语+havent/hasnt句式句式1.肯定句：肯定句：I have just washed my clothes。我刚刚洗过衣服。我刚刚洗过衣服。2.否定句：否定句：I havent seen the movie yet。我还没看这部电影。我还没看这部电影。3.一般疑问句：一般疑问句：-Has she arrived here？-Yes，she has。-No，she hasnt。-她已经到这了吗？她已经到这了吗？-是的，她到了。是的，她到了。-不，她还没到。不，她还没到。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，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 taught9.以以n或者或者en结尾结尾。如：。如：be was/were been;see saw seen;know knew known;fall fell fallen1.Write the forms of the past tense and past participle:drink _ _ see _ _ find _ _ leave _ _ tell _ _ do _ _drank drunksaw seenfound foundleft lefttold told did done Why is Mr.Yang still in the teachers office?Maybe he _ his work yet.A.doesnt finish B.hasnt finished C.havent finishedB Use the words in brackets to complete the conversations.1.A:Would 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.I have just drunk some teaHave you found it3.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 tonight?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 yet()【广西贵港广西贵港】Do you know the movie Lost in Thailand?Yes.I _ it twice.Its funny.A.saw B.see C.have seen D.will see C()【黑龙江牡丹江黑龙江牡丹江】Lunch?No,thanks.I_.A.will eat B.am eating C.have eaten()【湖北黄冈湖北黄冈】Where is Tom?We cant find him anywhere.Perhaps he _ home.A.has come B.is going C.went D.was goingCA用法用法 表示过去发生或已经完成的某一动作表示过去发生或已经完成的某一动作 对现在造成的影响或结果。对现在造成的影响或结果。e.g.Have you had your lunch yet?Yes,I have.Ive just had it.(现在现在 我不饿了。我不饿了。)时间状语时间状语already,yet,just,ever,never,before构成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。构成的。在现在完成时的各种结构中，在现在完成时的各种结构中，have，has均为均为助动词助动词，无实际意义，只起构成时，无实际意义，只起构成时态的作用，态的作用，不可省略不可省略。当主语是。当主语是第三人第三人称单数称单数时助动词用时助动词用has，其余人称一律用，其余人称一律用have。句式句式1.肯定句：主语肯定句：主语+have/has+过去分词过去分词 (+其他其他)2.否定句：主语否定句：主语+have/has+not+过去过去 分词分词(+其他其他)3.一般疑问句：一般疑问句：have/has+主语主语+过去过去 分词分词(+其他其他)答语：肯定回答：答语：肯定回答：Yes,主语主语+have/has 否定回答：否定回答：No，主语，主语+havent/hasnt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，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 taught9.以以n或者或者en结尾结尾。如：。如：be was/were been;see saw seen;know knew known;fall fell fallenRetell what you did yesterday and what you have done now.
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