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  • 2021-10-12 发布

外研版八年级下册英语同步教学课件-Present Perfect Tense Revision

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可参考语言材料 • Have you read …yet? • Yes, I have. / No, I haven’t. • Has he/she read …yet? • Yes, he/she has. • No, he/she hasn’t. Have you read these books? the water park the zoo the amusement park 可参考语言材料 • A: Have you ever been to…? • B: Yes, I have. / No, I haven’t. • A: I’ve been to …many times. • B: Me, too. toy bear Do you have …at home? How long have you had the …? I have had …for …years./since …years ago. for+时间段;since+过去的时间点, 是现在完成时的标志词。 old bookscap 一、现在完成时的结构: 动词的过去分词的变化规则 (一)规则变化: (助动词)have/has+动词的过去分词 1. 一般在动词词尾直接加ed。 2. 以不发音的e结尾的动词后面加d。 如:like → liked → liked; phone → phoned → phoned 如: pick → picked → picked; wish → wished → wished; study → studied → studied; hurry → hurried → hurried; 3.以“辅音字母 + y”结尾的动词,变y为i, 再加-ed。如: 4. 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-ed。如: stop → stopped → stopped; plan → planned → planned 不规则变化: 1. AAA式,如: let → let → let cut → cut → cut put → put → put cost → cost → cost 2. ABB式,如: feel → felt → felt keep → kept → kept 3. ABA式如: 4. ABC式如: be → was/were → been swim →swam →swum drink →drank →drunk come → came → come beat → beat → beaten 5.AAB式如: Write the forms of the past tense and past participle: be _________ ______ see ______ ______ read ______ ______ leave ______ ______ come ______ ______ was/were been saw seen read read left left came come 1.“完成法”(基本用法):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。 标志词:already、 never、 ever、just、 yet 、before 、 twice, so far等。 2.“未完成法”:表示动作或状态从过去已经开始,持 续到现在并有可能延续到将来。 标志词:for+一段时间; since+过去时间状语或一般过去时的句子。 二、现在完成时的用法: 三、现在完成时的各种句式:  1.陈述句:  2.否定句: 3.一般疑问句: 4.特殊疑问句: 主语+ have/has+过去分词+其它成分。 主语+have/has +not+过去分词+其它成分。 Have/Has+主语+过去分词+其它成分? Yes,主语+ have/has. No,主语+haven’t / hasn’ t. 特殊疑问词+have/has+主语+过去分词+其它成分? 四、中考考点解读: 考点一:考查基本用法 例如: His parents look very sad . Maybe they ____what's happened to him .   A. knew     B. have known   C. must know D.will know  简析:现在完成时主要强调过去发生的动作对现在造 成的影响,重点在于对现在的影响。这种考查难度较大, 往往无时间状语,需要从上下文分析、推理才行。故上 两侧根据上下文分析、推理,正确答案是B。 B 考点二:考查时间状语 ( ) 例1. Have you met Mr Li ______? A. before B. ago C. just D. a moment ago   ( )例2.—Our country has changed a lot ______.   —Yes . I hope it will be even ______ .   A.so far; well     B. before ; good   C. so far; better    D. before ; better ( )例3. Zhao Lan has already studied in this school_______.  A. two years      B. since two years      C. for two years     D. two years ago ( )例4. We have known Xiao Li_____ she was a little girl . A. for B. while C. since D. when ( )例5. Harry Potter is a very nice film .I have seen it_____ . A. two  B. twice C. second D.a second A C C C B 现在完成时的时间状语常有如下四类: ⑴现在完成时常与(已经) ,(刚刚,正好) , (曾经) ,(从来,也不;从不) ,(以前) , (仍然) 等连用。   (2)现在完成时时常与“ +时间段或 +过去时间点”连用 (或+过去时从句)。   (3)现在完成时还与(一次) ,(两次) , (三次) 等表示重复次数的词语连用。 (4)现在完成时常与recently(近来),so far(到目前为止),in the past/“last +一段时间”等时间状语连用。因为上述短语表 示的是从现在起往前推算的一段时间,句中的动作是从过去某一 时间或时刻开始持续到现在的。 already just ever never before yet for since once twice three times 考点三:考查与一般过去时的区别 例1.—These farmers have been to the United States .   —Really ? When ___ there ? A. will they go    B. did they go   C. do they go     D. have they gone 例2.—______ you ___ your homework yet ? —Yes . I _____ it a moment ago . A. Did ; do ; finished    B. Have ; done ; finished C. Have ; done ; have finished   D. will ; do ; finish 简析:现在完成时与一般过去时容易混淆,就是因为它们所表示的 动作都发生在过去,但二者又有区别:一般过去时表示过去某个 时间发生的事、存在的状态或经常发生的动作,说话的侧重点在 于陈述一件过去的事情,与现在没有关系;现在完成时表示与现 在有关系的发生在过去的动作,它不与表示过去的时间状语(如 yesterday , last week , a moment ago等)连用。故例1、 2的正确答案皆为B。 B B 现在完成时中,非延续性动词不能与for和 since引导的表示一段时间的状语连用,非延续性 动词与一段时间连用时可采用下列方法: 考点四:考查非延续性动词的用法 将非延续性动词转换为延续性动词的方法 1)直接用延续性动词 buy– put on-- catch (get) a cold – borrow— come/go /become— 2)转换成be+名词 join the Party – have wear have a cold keep be be a party member 3)转换成be+形容词或副词 die— finish – begin— leave – fall asleep – close – 4)转换成 be+介词短语 go to school– be in school join the army – be in the army be dead be over be on be away (from) be asleep be closed 非延续性动词的用法中考真题 1. His father ______ the Party since 1978 . A. joined B. has joined C. was in D. has been in 2. Hurry up! The play ________ for ten minutes . A.has begun B.had begun C.has been on D.began 3.—How long have you ____ here ? —About two months . A. been B. gone C. come D. arrived D C A 非延续性动词的用法中考真题 4. His uncle died two years ago .(同义句) His uncle has ______ _______ for two years. 5. Her mother has been a Party member for three years .(同义句) Her mother ______ the Party three years _____ . been dead joined ago √ × × × √ × √ √ ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) a.I have bought a new dictionary for a week. b.I have had a new dictionary for a week. 我买一本新词典已有一星期了。 b.They have come here for two days. a.They have been here for two days. 他们来这儿已经两天了。 a.He has joined the Party for two years. b.He has been a Party member for two years. 他已入党两年了。 a.The man has been dead for several years. b.The man has died for several years. 这个人已经死了几年了。 考点五:考查词组have/has been in / to与 have/has gone to的区别 例1. Miss Green isn‘t in the office . She_______ to the library . A.has gone B. went C.will go D. has been 例2. My parents ______ Shandong for ten years . A. have been in B. have been to  C. have gone to D.have been 简析:“have/has gone to + 地点”表示“某人去了某地 (还未回来)”,指主语所指的人不在这儿。“have/has been in + 地点”表示“在某地呆了多长时间”,常与表示时 间的状语连用。“have/has been to +地点”表示“曾经去 过某地(但现在已不在那儿)。”故例1、2的正确答案皆为A。 A A 用所给词的适当形式填空 1.She ____ _______ (finish) her homework already. 2._____ you ever______ ( see) my pen? 3.Jim’s father __________(live) in London for 20 years. 4. ---- ______ you______ (be) to France? --- Yes, I ______ (go) there last year. 5. They _____ _____ (have) the building since three years ago. 6. ----______Mr Green _______ (write) the novel? ----Not yet. has finished Have seen has lived Have been went have had Has written 二、现在完成时的用法 一、现在完成时的结构 三、现在完成时的各种句式 四、中考考点解读 § 课后提升 § 1、必做作业:巩固本节所复习的语法内容,把错题整理在 错题本上。 § 2、你对现在完成时态还有什么疑惑? § _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ ___________________________________________________