2022年上海牛津英语AUnit、知识点及语法重点.docx
《2022年上海牛津英语AUnit、知识点及语法重点.docx》由会员分享,可在线阅读,更多相关《2022年上海牛津英语AUnit、知识点及语法重点.docx(8页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -上海牛津英语 7A Unit4、5 学问点及语法重点教学内容: 7A Unit4、 5 学问点及语法重点(现在完成时)教学重点:三种时态的训练和巩固教学难点:现在完成时瞬时动词与连续性动词的转换教学过程 :1、课文学问点讲解 2、时态练习 3、练习巩固 4、 家庭作业1. 用 there be 句型表示客观存在(就近原就)2. 现在完成时(一)含义现在完成时用来表示现在之前已发生或完成的动作或状态,但其结果却和现在有联系 , 也就是说 , 动作或状态发生在过去但它的影响现在仍存在;e.g. I have lo
2、st my wallet. 含义是:现在我没有钱花了; Jane has laid the table.含义是:已可以吃饭了; Michael has been ill. 含义是:现在仍旧很虚弱; He has returned from abroad. 含义是:现在已在此地 (二)结构助动词 have /has+动词过去分词,主语为第三人称单数用has,其他人称用have ;(三)句型1、确定句:主语 +have /has+动词过去分词 +其他;I have studied English for 5 years . 2、否定句:主语 +have /has+not +动词过去分词 +其他;W
3、e haven t been there .3、一般疑问句:Have/Has+主语 +动词过去分词 +其他?Has he eaten that apple . 4、特别疑问句:特别疑问词(四)用法+ have /has +主语 +动词过去分词 +其他?1、现在完成时可以用来表示发生在过去某一时刻的、连续到现在的情形 ,常与 for, since 连用;e.g. Mary has been ill for three days. I have lived here since 1998. 2、现在完成时往往同表示不确定的过去时间状语连用 e.g. He has already obtained
4、a scholarship. I haven t seen much of him recently lately. We have seen that film before. Have they found the missing child yet. 3、现在完成经经常与表示频度的时间状语连用 e.g. Have you ever been to Beijing. , 如 already, yet, just, before, recently, lately 等:I have never heard Bunny say anything against her. I have used
5、 this pen only three times. It is still good. George has met that gentleman on several occasions. 4 、现在完成时仍往往可以同包括现在时间在内的时间状语连用,如 now, up to these few days/weeks/months/years, this morning/week/month/year, now, just, today, up to present, so far 等;e.g. Peter has written six papers so far. Man has no
6、w learned to release energy from the nucleus of the atom. There has bee too much rain this year. The relations between us have been enhanced in the past few years. 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 1 页,共 7 页 - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -Up to the present e
7、verything has been successful. 5、现在完成时表示现在之前就已完成的动作, 虽然其成效或影响仍旧存在但已不再连续, 但是有一些现在完成时的句子,在后面加上for+ 一段时间,就现在完成时的动作就表示连续性;e.g. Thomas has studied Russian. 现在不再学俄语 Thomas has studied Russian for three years. still studying it now. =Thomas began to study Russian three years ago, and is 6、现在完成时仍可以用来表示过去的一个
8、时间到现在这段时间内重复发生的动作;e.g. We have had four texts this semester. 现在完成时中的时间状语: already 通常用于确定句中,意为“ 已经”,位于行为动词之前, be 动词、助动词之后;有时可放在疑问句句尾,表示惊奇;例如:We have already cleaned the classroom. Have you finished it already ?yet 用于疑问句中表示“ 已经”;用于否定句中,表示“ 仍没” ;例如:Has he found his watch yet ?他仍没找到他的表吗?No, not yet. 是,
9、仍没有; ever 意为“ 曾经” ,常用于疑问句或否定句中,位于助动词和过去分词之间,表示从过去到目前为止的时间;例如:Have you ever been there?你曾经去过那里吗?Nothing has ever happened here. 这里未曾发生过什么事; never 意为“ (曾经)从未、没有”, 是否定副词,在句中位于助动词和过去分词之间;ever 与否定词not 连用相当于 never;例如:I havent ever spoken to her. = I have never spoken to her. 我从未跟她讲过话; just 意为“ 刚刚”, 用于现在完成
10、时 , 表示行为刚刚过去 , 位于助动词与过去分词之间;e.g. He has just come back from school. 他刚从学校回来; just now 意为“ 刚才” , 表示过去某时 , 用于一般过去时 just now.他刚才从学校回来;, 位于句首或句尾均可; e.g. He came from school for 和 since 的用法及区分;for 与一段时间连用,since 与时间点连用;留意: since 后接过去时的时间状语或过去时的句子;e.g. I have been to Shanghai twice since 1970. I havent see
11、n her since she left Shanghai. I saw Ping Ping six years ago. Since I havenever seen her. have/has gone to、have/has been to 和 have/has been in 的区分;have/ has gone to 去了 ,在去某地的路上或在某地, 人仍未回来have/ has been to 曾经去过 , 人已经回来了have/ has been in 已经在 , 常与一段时间连用e.g. She has been to Shanghai before. 她以前曾去过上海;She
12、 has been in Shanghai for ten years. 她在上海 10 年了;Has he gone to Qingdao. 他去青岛了吗?但不能说 区分短暂性动词与连续性动词 . Have you gone to Qingdao. 表示短暂性 瞬时性 的动词在现在完成时的句中不能和一段时间连用.短暂性的动词如:come,go,join ,leave,buy 等,在完成时态中不能与for,since 短语或 How long 等引起的时间状语连用;瞬时动词不能直接与for, since 连用,要转变动词为连续性动词; 第 2 页,共 7 页 细心整理归纳 精选学习资料 - -
13、 - - - - - - - - - - - - - - - - - - - - - - 名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -瞬时动词转换为连续性动词:buy - have borrow - keep . arrive/ come- be in /at leave -away from . join-be a member of/be in . die- be dead get up - be up . get married- be married go there - be there . begin/start- be on stop-
14、be over . open - be open 现在完成时与一般过去时的区分:一般过去式: 过去时表示过去某时发生的动作或单纯表达过去的事情,强调动作;现在完成时: 为过去发生的, 强调过去的事情对现在的影响,现在完成时强调 过去发生的动作与现在的联系,对现在的影响;强调的是影响;一般过去时强调过去发生的动作或状态,与现在没有联系;现在现在一看时间状语;假如句中没有表示过去准确时间的状语,常用现在完成时;如 果有,就只能用一般过去时;如:I have visited the factory. I visited the factory last year.二看句首有无疑问词;假如笼统地问人家
15、做过某事了吗(句首无疑问词),常用现在完成时;但进一步询问何时、何地、何缘由、用什么方式做那事时(句首 有疑问词)就要用一般过去时;如:Have you had your breakfast. Yes, I have. When did you have it. At seven thirty.留意: 这种用法是以连贯性问答为背景的;否就就需要详细情形详细分析;如:How many words have you learned by heart. 细心整理归纳 精选学习资料 - - - - - - - - - - - - - - - 第 3 页,共 7 页 - - - - - - - - -
16、名师归纳总结 精品学习资料 - - - - - - - - - - - - - - -How did you learn them by heart. 三看句中谓语动词是否为连续性动词;假如表示的动作或状态始终连续到现在,最好选用连续性动词,并使用现在完成时;假如是瞬时动词,就用一般过去时;如:He has been a league member for two months. He joined the Youth League two months ago. 现在完成时练习题一、单项挑选1、Both his parents look sad . Maybe they _whats hap
17、pened to him . . knew . have known . must know .will know 2、He has _ been to Shanghai , has he . . already .never .ever . still 3、Have you met Mr Li _ ?. just . ago .before . a moment ago 4、The famous writer _ one new book in the past two year . is writing .was writing .wrote .has written 5、-Our cou
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 2022 上海 牛津 英语 AUnit 知识点 语法 重点
限制150内