人教版八年级下册Unit8语法课件.ppt
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1、Unit 8,Have you read Treasure Island yet,?,第三课时:,Section A,(Grammar Focus-4c),现在完成时,(,一),moved here,in 2004,have breakfast,I still live here,Im not hungry now,past,now,1.,过去的动作对现在造成的影响或结果。和,already,,,never,ever,just,before,yet,等状语连,用。,I have just had my breakfast.,(,现在我不饿,),2.,过去开始,持续到现在的动作或状态,,常与,f
2、or,或,since,引起的一段时间状语连用。,I have lived here for three years.,I have lived here since 2004/three years ago.,动词构成:,have/has+v,过去分词,考点,1,现在完成时的结构,主语,have/has,动词的过去分词其他,.,肯定句,eg:I have already finished my homework.,我已经完成了我的作业。,主语,have/has,not,动词的过去分词,否定句,其他,.,eg:I have not heard from him yet.,我还没收到他的来信。,一
3、般疑,Have/Has,主语动词的过去分词其他?,问句和,简略回,答,Yes,,主语,have/has.,No,,主语,have/has not.,Eg:,Have you ever been to Beijing,?,你曾去过北京吗?,Yes,,,I have.,是的,我去过。,/,No,,,I havent.,不,我没去过。,have not,常简略为,havent,,,has not,常简略为,注意:,hasnt,。,典例,Monica,you,B,the exam!Congratulation,!,A.pass,B.have passed,C.will pass D.are passi
4、ng,【点拨】本题用,语境判断法,。由,Congratulation,!可知是已,经通过考试了,对现在的影响,用现在完成时。,考点,2,already,与,yet,在现在完成时中的用法,already,adv,.,通常用于肯定句中,,I have already had,已经;早,已,一般用于,have/has,后,,breakfast.,我已经,实义动词前,也有放,吃过早饭了。,在句尾的情况。,yet,adv,.,还;,用于否定句和疑问句,I havent done my,已经,中,一般用在句末。,homework yet.,我还没有做作业。,典例,Has your sister finis
5、hed reading,B,?,Yes.She has,finished it.,A.yet,;,yet,B.yet,;,already,C.already,;,yet,【点拨】本题用,语法判定法,。,already,常用于肯定陈述句中,,yet,多用于否定句或疑问句中。,考点,3,一般过去时与现在完成时的区别,(1),一般过去时表示过去某时发生的动作或单纯叙述,过去的事情。现在完成时强调过去的动作对现在,造成的影响或结果。,eg:I saw this film yesterday.,我昨天看了这部电影。,I have seen this film.,这部电影我已经看过了。,(2),一般过去时
6、常与具体的表示过去的时间状语(如:,yesterday,,,last week,,,three days ago,,,in 1990,等),连用;现在完成时不与表示明确的过去的时间状语,连用,但可以与,in the past.years/weeks,,,so far,等时,间状语连用。,eg,:,Tom wrote a letter to his parents last night.,昨晚汤姆给他父母写了一封信。,The weather has been so hot so far this summer.,到目前为止,今年夏天天气一直很热。,典例,I,C,the book club las
7、t week and I _,two books already.,A.join,;,read,B.joined,;,read,C.joined,;,have read D.joined,;,has read,【点拨】本题用,寻找题眼法,。由句中时间状语,last week,可知,第一个空应用一般过去时;由句中,already,可知第二个空应,用现在完成时。,4a,Use the words in brackets to complete the conversations.,1.A,:,Would you like something to drink,?,B,:,No,,,thanks.I
8、ve just drunk some tea.,(,just/drink some tea,),2.A,:,I heard you lost your key._,Have you found it,?(,find,),B,:,No,,,not yet.,3.A,:,Do you know when Tom is leaving,?,He has already left,.,(,already/leave,),B,:,A,:,When,did he leave,?(,leave,),B,:,This morning.,4.A,:,Is your sister going to the mov
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