译林版八年级下英语语法课件.ppt
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1、译林版八年级下英语语法课件译林版八年级下英语语法课件语法专项课件语法专项课件(现在完成时(现在完成时1)语法透析语法透析考点大观考点大观易错辨析易错辨析通关训练通关训练考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成时结构肯定句:主语 + have/ has + 过去分词+.否定句:主语+havent ( have not) +过去分词 主语+hasnt ( has not ) +过去分词.疑问句:Have / Has+主语+过去分词.?I havent finished my homework. Have you finished your homework? I have fini
2、shed my homework. 结构考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成时三大用法用法用法11) 表示到现在为止已经完成或刚刚完成的动作。By now, I have collected all the data I need.Now we have planted all the trees.考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成时三大用法用法用法22) 表示过去发生的动作,强调结果或对现在的影响。Someone has broken the window. I have just cleaned my hands. (窗户现在是坏的)(手是干净的)
3、考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成时三大用法用法用法33) 表示从过去开始并持续到现在的动作或状态。 She has learned English for 5 years. He has lived in Beijing since he was born .考点大观考点大观易错辨析易错辨析通关训练通关训练过去式、过去分词(1)一般动词,在词尾直接加“ ed ”。 work-worked-worked (2)以“ e ”结尾的动词,只在词尾加“ d ”。 live-lived-lived (3)以“辅音字母 + y ”结尾的动词,将“y” 变为 “i”,再加“ ed ”
4、。 study-studied-studied (4)重读闭音节结尾,末尾只有一个辅音字母,先 双写该辅音字母,再加“ ed ”。 drop-dropped-dropped 规则变化规则变化考点大观考点大观易错辨析易错辨析通关训练通关训练过去式、过去分词不规则变化不规则变化A.过去分词与过去式形式一样havehadhad spend spentspent makemademade saysaidsaid findfoundfound hearheardheard meetmetmet leaveleftleft考点大观考点大观易错辨析易错辨析通关训练通关训练过去式、过去分词不规则变化不规则变化
5、B.过去分词与过去式形式不一样taketooktaken speak spokespoken singsangsung drivedrovedriven bewas/werebeen gowentgone 考点大观考点大观易错辨析易错辨析通关训练通关训练过去式、过去分词不规则变化不规则变化C.过去分词、过去式与动词原形一样cutcutcutput putput letletletreadreadread 考点大观考点大观易错辨析易错辨析通关训练通关训练易错点2012started learning English2015learning3 yearshave learned EnglishI
6、started learning English in 2012.I am learning English these days.I have learned English for 3 years.(一般过去时)(现在进行时)(现在完成时)现在完成时VS一般过去时考点大观考点大观易错辨析易错辨析通关训练通关训练易错点现在完成时/一般过去时用法不同现在完成时一般过去时用法1:表示到现在为止已经完成的动作。用法1:表示过去某时发生的动作。用法2:表示动作发生在过去,对现在造成影响。用法2:表示过去存在的某种状态。用法3:表示动作开始于过去,一直持续到现在,并有可能继续持续下去。用法3:表示过去
7、经常性发生的动作或状态。考点大观考点大观易错辨析易错辨析通关训练通关训练易错点现在完成时/一般过去时用法不同I saw this film yesterday. I have seen this film.(一般过去时:强调动作)(现在完成时:强调影响)已经知道内容考点大观考点大观易错辨析易错辨析通关训练通关训练易错点现在完成时/一般过去时结构不同现在完成时一般过去时肯定句:主语 + have/ has + 过去分词 +.肯定句:主语 + 过去式 +. 主语 + was/were + 表语.否定句:主语+havent ( have not) +过去分词+.主语+hasnt ( has not
8、) +过去分词+.否定句:主语 + did not (didnt) + 动词原形 + was/were not (wasnt/werent) + 表语.疑问句:Have / Has+主语+过去分词.?疑问句:Did + 主语 + 动词原形 + ? Was/Were + 主语 + 表语?考点大观考点大观易错辨析易错辨析通关训练通关训练易错点现在完成时经典例句:I have been to Australia before.I havent been to Australia before.Have you been to Australia before?现在完成时/一般过去时结构不同考点大观考
9、点大观易错辨析易错辨析通关训练通关训练易错点现在完成时/一般过去时结构不同一般过去时经典例句:My father flew to Australia yesterday.My father didnt fly to Australia yesterday.Did you father fly to Australia yesterday?考点大观考点大观易错辨析易错辨析通关训练通关训练易错点现在完成时/一般过去时标志词不同现在完成时一般过去时副词作标志词:just, already, yet过去时间点:just now, at that time, yesterday, this mornin
10、g, three years agosince + 时间点/(时间段+ago)/一般过去时句子for + 时间段过去时间段:in the past, in + 过去的年份, last week, once upon a time等表示次数的时间状语:once, twice, three times, ever, never特殊结构:used to + 动词原形 (过去常常)考点大观考点大观易错辨析易错辨析通关训练通关训练易错点现在完成时/一般过去时标志词不同She returned yesterday. There was a temple in the past.He has been in
11、 New York for many years.Have you ever been to Beijing?(一般过去时)(现在完成时)考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例1】He _ in this factory for 20 years already. A. will work B. works C. has worked D. is working考查时态。already为现在完成时标志词,且 for + 时间段表明对现在的“影响”,故选用现在完成时结构have/has done。考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例2】Is Ri
12、chard still living here? No, he _ to Paris already. A. had moved B. moved C. will move D. has moved 考查时态。No说明Richard不在此处,且already为完成时标志词,选用现在完成时结构have/has done。考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例3】Julies father _ to London last month. He _ there three times. A. went, had gone B. has gone, has been C. we
13、nt, has been D. has been, had gone考查时态。last month为一般过去时标志词,选用went;three times表明去伦敦的“结果”“影响”,选用现在完成时。语法专项课件语法专项课件(现在完成时(现在完成时2)语法透析语法透析考点大观考点大观易错辨析易错辨析通关训练通关训练考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成时三大用法现在完成时三大用法:1.表示到现在为止已经完成或刚刚完成的动作。2.一件发生在过去的事情对现在产生影响。3.一个动作开始于过去,并持续到现在(也许还将持续下去)。考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成
14、时结构回顾肯定句:主语 + have/ has + 过去分词+.否定句:主语+havent ( have not) +过去分词 主语+hasnt ( has not ) +过去分词.疑问句:Have / Has+主语+过去分词.?I havent finished my homework. Have you finished your homework? I have finished my homework. 结构考点大观考点大观易错辨析易错辨析通关训练通关训练already一般用于肯定句,意为“已经”,句中句末均可yet一般用于否定句和疑问句,意为“已经” ,一般位于句末Tom has a
15、lready finished his homework.Tom hasnt finished his homework yet.易错点1现在完成时常见标志词辨析考点大观考点大观易错辨析易错辨析通关训练通关训练易错点1现在完成时常见标志词辨析ever用于疑问句,意为“曾经”,位于句中never含否定意义,意为“从不”,位于句中Have you ever eaten fish?I have never eaten fish.考点大观考点大观易错辨析易错辨析通关训练通关训练易错点1现在完成时常见标志词辨析just多用于肯定句,意为“刚刚”,位于句中before用于所有句式,意为“之前”,位于句末I
16、 have just had my lunch.She hasnt seen you before.考点大观考点大观易错辨析易错辨析通关训练通关训练易错点2since/for用法辨析since+时间点since+ 时间段+ agosince+ 从句(一般过去时)John has been a football player since 3 years ago.He has lived in China since 1992.sinceTom has lived in America since he was a little child.考点大观考点大观易错辨析易错辨析通关训练通关训练易错点2
17、since/for用法辨析for+ 时间段forHe has kept the book for 2 weeks.考点大观考点大观易错辨析易错辨析通关训练通关训练易错点3have been to/have gone to辨析have been tohave gone to去过某地已经回来,可用于任何人称。常与once, twice, three times, ever, never 等连用。去某地了,说话时某人不在现场,常用于第三人称。考点大观考点大观易错辨析易错辨析通关训练通关训练易错点3have been to/have gone to辨析I have been to Beijing fo
18、r three times.My father has gone to Shanghai for a meeting.(去了尚未回来)(去过已回来)考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例1】用since/for填空1. My aunt has lived in Australia_15 days.2. Margaret is in her office. She has been there_7 oclock.3. India has been an independent country_1974.考查现在完成时标志词。题1中,15 days为时间段,选用for。题2
19、、3中, 7 oclock和1974为时间点,选用since。forsincesince考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例2】My parents _Nanjing twice. A. have gone to B. have been to C. have been in D. are in 考查现在完成时。句意:我父母去过南京两次。have gone to去了尚未回来;have been to去过已经回来,锁定题眼twice,只能选择答案B。考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例3】I havent decided when to vis
20、it my grandpa _. A. neverB. still C. already D. yet考查现在完成时标志词。句意:我还没有决定什么时候去看我爷爷。never,still仅用于句中,already用于肯定句,yet用于否定句、疑问句,故答案选D。考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例4】Has he _ been to Shanghai? A. already B. yet C. ever D. still考查现在完成时标志词。句意:他曾去过上海吗?由题目可知为现在完成时。根据句意“曾经”,选用ever。考点大观考点大观易错辨析易错辨析通关训练通关训练解析
21、解析【典例5】Have you met Mr Li _? A. just B. ago C. before D. a moment ago考查现在完成时标志词。句意:你以前见过李先生吗?ago用于一般过去时,just用于句中,答案只能选C。语法专项课件语法专项课件(现在完成时(现在完成时3)语法透析语法透析考点大观考点大观易错辨析易错辨析通关训练通关训练考点大观考点大观易错辨析易错辨析通关训练通关训练现在完成时用法表示到现在为止已经完成或刚刚完成的动作。表示过去发生的动作,强调结果或对现在的影响。表示从过去开始并持续到现在的动作或状态。I have already lost the key.
22、They have built many buildings in this city. 用法He has lived in Shanghai for five years.考点大观考点大观易错辨析易错辨析通关训练通关训练易错点非延续性动词转化为延续性动词短暂性动词不能跟表示一段时间的短语连用,被称为非延续性动词。为了表述这种意思,我们常用相应的延续性动词来代替非延续性动词。buy, borrow, arrive, come, die, fall, go, join, leave等。常见的非延续性动词考点大观考点大观易错辨析易错辨析通关训练通关训练易错点他入党五年了。He joined the
23、 Party five years ago .He has been in the Party for five years.He has been a Party member for five years.考点大观考点大观易错辨析易错辨析通关训练通关训练易错点转化规律转化规律考点大观考点大观易错辨析易错辨析通关训练通关训练易错点arrivebe in/atstartbe oncome backbe backmarrybe marriedopenbe openclosebe closedcatch a coldhave a coldfall asleepbe asleep考点大观考点大观易错
24、辨析易错辨析通关训练通关训练易错点The football match began at 9:00a.m.The football match has been on since 9:00 a.m.My teacher left Nanjing 3 days ago.My teacher has been away from Nanjing for 3 days.考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例1】She _ for ten years and now she has a lovely daughter. A. married B. has been marrie
25、d C. got married D. has got married考查现在完成时。marry是非延续性动词,用于现在完成时的时候,需转化为be married,故选B。考点大观考点大观易错辨析易错辨析通关训练通关训练解析解析【典例2】I _ my hometown for a long time. I really miss it. A. left B. went away from C. have left D. have been away from考查现在完成时。leave为非延续性动词,用于现在完成时的时候,需转化为延续性动词be away from,故选D。考点大观考点大观易错辨
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