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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Grammar,Present perfect tense,Unit 1 Past and present,Grammar Unit 1 Pas,1,We,have run,at school for a long time.,We have run at school for a l,2,1.We use the present perfect tense to talk about an action that started,in the past,and continues to,the present,.,(从,过去,持续到,现在,的动作或状态）,I,have,lived,here,since,I was born.,My daughter,has studied,dance,for four years,.,1.We use the present perfect t,3,2.We use the present perfect tense to talk about an action that happened in the past and has a connection with the present.,(,过去,的动作对,现在,有影响）,Eddie,has,just,eaten,Hobos food.,(Eddie ate the food,and now Hobo is not happy.),She,has gone,.(she isnt here.),2.We use the present perfect t,4,3.We also use the present perfect tense to talk about how many times an action has happened,till now（up to now),.直到现在,I,have,already,read,this book many times.,3.We also use the present perf,5,subject,have/has+(not),past participle,I/You/We/They,have(not),moved.,He/She/It,has(not),moved.,the present perfect tense,have/has+V pp,have/has not+V pp,have/has 此时没有任何意思,只是一种句型结构,subject have/has+(not)past,6,1.,I have already finished my homework.,否,疑,2.,He has seen the dolphin show many times.,否,疑,I havent finished my homework,yet,.,Have you finished your homework,yet,?,He hasnt seen the dolphin show many times.,Has he seen the dolphin show many times?,Yes,he has./No,he hasnt.,Yes,I have./No,I havent.,already(肯定句),yet(否定、疑问句),1.I have already finished my,7,the past participle of verbs,1)We add,-ed,to regular verbs.,Most verbs,+ed,visitvisit,ed,Verbs ending in,e,+d,livelive,d,Verbs ending in,a consonant+y,yi+ed,carrycarr,ied,Short verbs ending in,a vowel+a consonant,double the consonant+ed,stopstop,ped,the past participle of verbs1),8,the past participle of irregular verbs.,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 come,A A B,beat beat beaten,the past participle of irregul,9,Game 1:,for,or,since,1.We have lived here _ 1990.,2.How long have you studied here?_ 5 years.,3.The boy has had a bad cold _ last night.,4.Mr.Huang has kept the books _ a week ago.,5.I have taught in the school _ I came here.,6.We have been friends _ a long time.,since,For,since,since,since,for,Game 1:for or since1.We have,10,for,+,“一段时间”,；,since,+,“时间点”,+,“一段时间,ago,”,；,+,“一般过去时的从句”。,Remember:,for+“一段时间”；Remember:,11,Eddie was born four years ago.,He always lives with Millie.,Eddie _ _ with Millie since _ _ _.,Eddie _ _ with Millie for _ _.,Four years _ _ since Eddie _ _.,It _ _ four years _ Eddie _ _.,has lived,he was,born,has lived,4 years,has passed,was born,has been,since,was born,4 years ago,_ four years _ Eddie _ _.,Its,since,was,born,Eddie was born four years ago.,12,_,Since,_,1.I have taught English for 8 years.,I have taught English since,8 years ago,.,It,has been,/,is,8 years since I taught English.,Eight years,has,passed since I taught English.,I,taught,English 8 years ago.,现在完成时,一般过去时,_ Since _1.I have,13,Game 2:,change the sentences,1.The boy has already gone home.（改为一般疑问句）,_,2.The girl has just given it to me.（改为否定句）,_,3.They have ever visited the island before.（改为否定句）,Has the boy gone home,yet,?,The girl hasnt given it to me,yet,.,They have,never,visited the island before.,Game 2:change the sentences1.,14,Remember:,1、（现在完成时）肯定句变为否定句的基本方法：,、（现在完成时）肯定句变为一般疑问句的基本方法：,、句中有ever直接将ever变为never,、若无ever，在助动词havehas之后加not,将助动词havehas提前到句首,already yet,already/just yet,Remember:1、（现在完成时）肯定句变为否定句的基本方,15,already,已经,一般用于,肯定,的陈述句,句中或句末,never,从未,一般用于肯定的陈述句,放在句中,表否定,的含义,ever,曾经,一般用于疑问句Have+主语+ever+过去分词,yet,还,仍然,一般用于否定句和疑问句,用于句末,just,刚,刚,一般用于肯定的陈述句,放在,句中,（注意与just now的区别）,recently,近来,用于句末,before,以前,用于句末,Remember:,already 已经,一般用于肯定的陈述句,句中或句末Rem,16,Have you done your homework _?,I have _ been to Chengdu.(去过,He has _ washed the dishes.,He has worked there _ he left school.,Have you cleaned your room _?,She has known Sam _ nine years.,Have you _ ridden a horse?,They have _ arrived.,We have not completed the project _.,I have _ been to London _.,Game 3:,complete these sentences,yet,ever/never,already/just,since,yet,for,ever,just/already,yet,never,before,Have you done your homework _,17,Can you do these?,I _ just _ reading the book.(finish),_ you ever _ to Moscow?(be),I _ _ here for two weeks already.(be),Lucy _ never _ to a foreigner before.(speak),I _ _ to the Summer Palace twice.(be),We _ _ your school before.(visit),He _ _ his history book yet.(find),_,have,finished,Have,been,have,been,has,spoken,have,been,have,visited,hasnt,found,_,_,_,_,_,_,Can you do these?I _ just _,18,1),He _(wait)for an hour.,2),I _(not finish)the work yet.,3),_ you _(know)him since then?,4),I _(hear)from my brother recently.,5),We _(be)there many times in the past 3 years.,6)How long _ you _(stay)at home already?,7),He _(not read)the book before.,8),Her sister _(go)to Changchun.She_(leave)this morning.,9),He _(live)in his hometown since he left here.,10)The writer _(finish)several story-books since 1990.,Final
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