中考英语语法—现在完成时.docx
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1、中考语法现在完成时(一)一、同步知识梳理一、构成 现在完成时由“助动词have/has+动词的过去分词”构成。二、现在完成时的肯定、否定和疑问句式 (1)肯定句式现在完成时的肯定句式是“主语+have/has+过去分词+其他”。如: I have been to America many times.我己经去过美国许多次了。 注意:“主语+ have/has”的缩写形式:I haveIve she hasshes you haveyouve he hashes we haveweve it hasits they havetheyve(2)否定句式现在完成时的否定句式是“主语+have/has
2、+not+过去分词+其他”。如: We havent seen such an interesting film before. 我们以前没看过这么有趣的电影。 She hasnt learned Chinese since she came to China. 自从她来到中国,她就没学过汉语。 注意:“have/has+not”的缩写形式:have nothavent has nothasnt(3) 一般疑问句式 现在完成时的一般疑问句式是把助动词have/ has提到主语之前。如: Have you read this paper yet?你已经看过这份报纸了吗? Yes,I have.
3、/No, I havent.是的,我看过。/不,我没看过。 一Has she been to Shanghai yet?她去过上海吗? 一Yes,she has./No, she hasnt.是的,她去过。/不,她没去过。 注意:现在完成时的一般疑问句的回答和其他时态的一般疑问句的回答一样,需用Yes或No,即“Yes,主语+have/has.”或”No,主语+havent/hasnt.”。(4)特殊疑问句式 现在完成时的特殊疑问句式是“特殊疑问词+have/has+主语+过去分词+其他?”如: How long have you taught English?你教英语多长时间了? Where
4、 have you been?你去过哪儿?三、过去分词的变化有些动词的过去分词和过去式的变化形式相同,其变化情况大致分类如下:变化举例与原形相同hithithit hurthurthurt在原形后加她t或dlearnlearntlearnt hearheardheard原形中的元音字母有变化getgotgot sitsatsat原形中的辅音字母有变化makemademade spillspiltspilt原形中的元音、辅音字母都有变化feelfeltfelt smell smeltsmelt 有些动词的过去分词和过去式的变化形式不同,其变化情况大致分类如下:变化举例与原形相同comecamec
5、ome runranrun原形中的元音字母有变化ringrangrung singsangsang在原形后加eneatateeaten fallfellfallen在原形后加nseesawseen givegavegiven在过去式后加nstealstolestolen breakbrokebroken原形、过去式和过去分词词形差异较大dodiddone gowentgone四、现在分词的定义及用法用法一:表示过去某个时间开始的动作或存在的状态,一直持续到现在并可能还将持续下去。动词使用延续性动词,be,study,work,live,keep,wait等。常与for或since引导的时间连用
6、 for+段时间 for ten minutes for three years since+过去点时间 since 1985 since+时间状语从句(一般过去时) since last month since+段时间+ago 带有all的常见时间状语:all day ,all this morning,all ones life带到现在为止的时间状语:so far, up to now ,till now ,ever since(迄今)其他常见时间状语in/during/over the past/last few years(在过去几年里)备注:these days既可以用于现在进行时也
7、可以用于现在完成时具体的几组时间短语辨析ago用于一般过去时(用瞬间动词);sinceago用于现在完成时;in the past用于一般过去时;in the past few years用于现在完成时;just now(置于句末)用于一般过去时;just(置于句中)用于现在完成时。如:I bought this dictionary three years ago.I have had this dictionary for three years.I have had this dictionary since three years ago.这本字典是我三年前买的。还可以用“It is/
8、has been+时间段+since从句”改写为:It is three years since I bought this dictionary.E.g. Kate has lived here for 3 years. Kate has lived here since 3 years ago. Kate has lived here since she came to China. I have sat for hours in the classroom,reading a novel.The weather has been cold so far this morning.How
9、long have you been here? -I have been here for an hour.小练笔-用since和for填空1. Jim has been in Ireland _ Monday.2. Jill has been in Ireland _ three days.3. His aunt has lived in Australia _15 days.4. Mary is in her office. She has been there _ 7 oclock.5. India has been an independent country _1974.6. Th
10、e bus is late. Theyve been waiting _ 20 minutes.7. Nobody lives in those houses. They have been empty _ many years.8. Mike has been ill _a long time. He has been in hospital _ October.9. We have lived here _ 1990.11. How long have you studied here ? _ 5 years .12. The boy has had a bad cold _ last n
11、ight .13. Mr. Huang has kept the books _ a week ago .14.I have taught in the school _ I came here .15.We have been friends _ a long time .注意点:对由for/since引导的现在完成时的时间状语,提问都用How long,要与when区分开来。He has been away since last week.He has been away for one week.小练笔:1. Mr. Green _ in China since five years a
12、go.A. lived B. has lived C. lives D. is going to live2. We have been friends since _. A. children B. five years C. five years ago D. five years before3. Mrs. Wang has lived in Haikou _ 1992. A. since B. from C. after D. in4. -What a nice bike! How long_ you _ it? -Just five weeks. A. will; buy B. di
13、d; buy C. are; having D. have; had5. -How long have you been here? - _ last month. A. For B. Until C. Before D. Since6. We have lived here _ five years ago A. when Bsince Cbefore Dafter7.His brother has been to Stone Forest twice _ he came to Yunnan AAfter Bbefore Csince Dfor8. How long have you _ h
14、ere ?About two months . been . gone . come . arrived9.I _ (work) here since I _ (move) here in 1999.用法二:表示过去发生的某一动作对现在造成的影响或产生的结果.现在完成时这一时态强调是过去动作与现在的联系.用于肯定句中不与for ,since连用。非持续性动词begin ,give out ,go, meet,see,change,pass,fix,die.常用的模糊的时间状语有:already ,once,before, once, twice, just, recently ,yet(否/疑
15、), already(肯), ever, never, 但不能与表示明确时间的时间状语连用,如in 1974,yesterday morning,last year等。Eddie has eaten my food .I have changed my plan a day before.He has cleaned the blackboard.Have you ever considered moving to the south?Has he visited the city twice?They have just joined our computer to the Internet
16、.注:非延续性动词不能表动作持续,所以肯定句不能与for,since一起He has arrived here for two hours He has been here for two hours .We have bought a DVD for a week. We had had/kept a DVD for a week.但是否定句不受限制。Havent seen you for a long time . We havent heard from her since last week.用法三。从过去到现在反复发生的动作,多次出现的状态.often, always, every
17、weekHe has always said so.Ive often seen him in the science museum. 五、.现在完成时态中already, yet, just, never, ever用法区别1、already意思是“已经”通常用于陈述句中(放在have和has的后面)也可用于疑问句,表示期望得到肯定的回答或表示惊异,此时already常放在句末。Has she found her bike already?她已经找到自行车了?2、yet用法yet可用于否定句,此时译为“还”;I havent found my ruler yet.也可以用于疑问句,译为“已经
18、”(放在have和has的后面也可放在句末)Have you found your ruler yet?你已经找到尺子了吗?3、just只用于陈述句意思是“刚刚”(放在have和has的后面)I have just received a letter.4、never用于否定句译为“从不”(放在have和has的后面)Ive never been to Beijing.5、ever用于疑问句译为“曾经”(放在have和has的后面)Have you ever been to Beijing?Use “never, ever, already, just, yet, ” to fill in th
19、e blanks.1. I have _ seen him before, so I have no idea about him.2. Jack has _ finished his homework.4. “Have you _ seen the film?” “No, I have _ seen it.”5. “Has the bus left _?” “Yes, it has _ left.”二、考点精练一、单项选择( )1. -Can you find our city _ a lot in recent years? -Yes. The road is wider and the
20、buildings are taller. Ahas changed B changes C changed Dwill change( )2. Im not hungry because I have_ had lunch A ever B never Cjust Dstill( )3. He came back late, so his father was very angry.(选出与画线部分意思相同或相近的一项) A arrived B gave back C returned Dreached( )4. She used to _ a bus to school, but now
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