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1、i. 现在完成时的概念。g9 grammar现在完成时表示过去发生的动作对现在造成的影响或结果she has been ill for three days. (她病了三天了。)表示从过去某一时间开始一直持续到现在的动作或状态。weve known each other since we were children. (我们从小就认识。) i have been a member of the party for 10 years.ii. 构成:”助动词 have, has + 过去分词”人称肯定否定疑问回答第一人称ihaveseen the ufo.wehave travelled arou
2、ndtheworld.i havent seen the ufo.wehavent travelled around the world.have you seen the ufo?haveyoutravelled around the world?yes,ihave./no,i havent.yes, we have./ no, we havent.第二人称youhavebeentoengland.you havent been to england.haveyoubeento england?yes, i/we have. no, i /we havent.第三人称he/shehasbee
3、ntobeijing.he/shehasnt been to beijing.has he/ she been to beijing?yes, he/she has. no, he/she hasnt.they have given concerts all over the world.they havent given concerts all over the world.have they given concerts all over the world?yes, they have. no, they havent.现在完成时态的肯定句、否定句和疑问句形式(以 work 为例):注
4、:规则动词的过去分词的构成与过去是相同,不规则动词的过去分词见附表。练. 把下面变否定句、一般疑问句并作肯定和否定回答。1. i have done my homework.否定句: 一般疑问句: 回答: 2. the plane has arrived.否定句: 一般疑问句: 回答: iii. 现在完成时用法归纳1. 现在完成时表示过去发生的动作现已完成,对现在造成的影响和结果。(此种用法谓语动词用结束性动词)如: the plane has arrived.常用的时间状语和副词:already (已经) 用于肯定句中,位置比较灵活,但通常放在 have/ has 与过去分词之间如: i h
5、ave already done my homework.yet (还,仍然,已经) 用于否定句和疑问句的句末。如: has she finished cooking yet? 他做完饭了吗?练:ihavealreadydonemyhomework.(变为否定句)ever (曾经),句中,多用于疑问句如: have you ever been to shanghai?never (从不) ,本身否定 ;before (以前),句尾,独立用;just (刚刚),用于肯定句中,常用在助动词和过去分词之间。如:i have just heard the news. 我刚刚听到消息。2. 完成时可用于
6、表示某时间段里完成的动作,常与 today, these days, recently等时间状语连用。如:have you seen her these days? 译: have you been to the library today? 译: have you read the book recently?译: 3. 现在完成时表示过去已经开始,持续到现在,可能延续到将来的动作和状态。常与表示过去某一时刻延续到现在的一段时间状语连用。如:a. for + 一段时间:for two hoursb. since + 时间点:since 1999, since last yearc. sinc
7、e + 一段时间+ ago: since two days agod. since + 从句(用过去时)e. up to now, till now, until now, so farf. in the past two years, in the last few daysg. recently, lately如: miss zhao has taught math for five years.his mother has worked in the shop since 1990.the greens have lived in london since three years ago
8、.注:其中在 a,b,c,d 这四种结构中,谓语动词必须为延续性动词。如: i have had this book for one and a half years. (这本书我已买了一年半了!)不能用 buy4. 短暂性动词怎样和表示一段时间的状语连用。英语中的短暂性动词,也叫做终止性动词、瞬间动词或非延续性动词,只表示一时的动作,在肯定句式中不能与表示延续的时间状语连用。常见的短暂性动词 有 :go, come, leave, find, buy, arrive, give, stop, join, marry, die, begin, start, borrow, close, ope
9、n, lend 等。eg. i have bought this book for three months. ()非延续性动词与一段时间连用时可采用下列三种方法:(1)将非延续性动词转化为延续性动词。leave- have (has) been away fromclose- be closedjoin- have (has) been (in)begin/start- be onbuy- have (has) hadgo- betheredie- have (has) deadfinish- be overcome (arrive)- have (has) been hereborrow-
10、 have (has) kept begin to work- have (has) workedopen- have (has) been openget up- have (has) been upput on have (has) oncome back- have (has) been backgone (left)- been awayjoined beengot to know known(2)时间状语的变化:把表时间的状语“for”变为“数词+ 时间名词+ago”的短语形式。(即:将时间状语改为过去时间,并用一般过去时代替现在完成时) 如: 他参军五年了。(判断正误)he has
11、 joined the army for five years. () he has been in the army for five years. () he joined the army five years ago.() 他离开济南三年了。he has left jinan for three years. ()he has been away from jinan for three years. he left jinan three years ago.(3) 句子模式的变化。用句型“it is + 一段时间+ since 从句”(从句中的谓语动词用非延续性动词的一般过去式表示
12、)如:the old man died two years ago.= the old man has been dead for two years.= it is two years since the old man died.5. have been to/ have gone to/ have been in 三种结构的区别(1) have been to 去过某地(现已离开),可以与 ever, never, once, twice 等连用。(2) has gone to 去某地了,说话时某人已离开此地,在去某地的路上或已在某地,总之现在还未回来。此句型一般用于第三人称。(3) h
13、ave been in 表示已在某地呆了多久,若该地为小地方则用 at。翻译:你以前去过北京吗? 吉姆已经去了伦敦。 格林一家在中国已经两年了。 6. 现在完成时与一般过去时的区别:(1)侧重点不同:现在完成时是与现在有关的时态,属现在时态范畴,它侧重于过去的动作对现在造成的影响。而一般过去时是一种过去时态,侧重于表示过去的动作,与现在无关。如:yesterday i went to the zoo. (仅说明昨天去了动物园,与现在无关) li lei has read the book. (说明李磊了解那本书的内容)(2) 连用的时间状语不同:一般过去时常与 ago, yesterday,
14、last, in 2000, just now 等连用。而现在完成时与 already, yet, still, just, so far, in the last/ past, before, ever, never, since, for等时间状语连用。注 现在完成时不可与 yesterday, last week, two days ago 等过去时间状语连用。被动语态语态是动词的一种形式,它表示主语和谓语的关系。语态有两种:主动语态和被动语态。如果主语是动作的执行者,或者是说动作是由主语完成的,要用主动语态;如果主语是动作的承受者,或者是说动作不是由主语而是由其他人完成的,则用被动语态
15、。一、被动语态各时态构成表tense主动语态被动语态一般现在时bevvsamisare+ pp一般将来时will+ vwill be +pp现在进行时amisare+ vi ngamisare+ being+ pp一般过去时waswerevedwaswere+ pp一般完成时havehas+ pphavehas+ been+ pp过去完成时had+ pphad+ been+ pp过去进行时waswere+ vi ngwaswere being+ pp情态动词can+ vcan+ be+ ppour classroom is cleaned everyday. a new shop was bu
16、ilt last year.this book has been translated into many languages. a new hospital will be built in our city.young trees must be watered often.my bike is being repaired by tom now. there are twenty more trees to be planted. 二、主动句变为被动句所遵循的 4 个步骤:1. 把原主动句中的宾语变为被动句的主语2. 把动词变为被动形式即 be +过去分词,并注意其人称和数随主语的变化,
17、而动词的时态则保持不变。3. 原主动句的主语如需要则放在 by 后面以它 的宾格形式出现(注代词的宾格),如不需要则可省略。4. 其它的成分(定语、状语)不变。三、不用被动语态的情况1) 不及物动词或动词短语无被动语态(即多数的瞬间动词):appear, die(死亡),disappear(消失) , end (vi. 结束), fail, happen, las t, lie, remain, sit, spread, stand比较: rise, fall, happen 是不及物动词; raise, seat 是及物动词。(错)the price has been risen.(对) t
18、he price has risen.(错) the accident was happened last week. (对) the accident happened last week.(错) the price has raised.(对) the price has been raised. (错) please seat.(对) please be seated.要想正确地使用被动语态,就须注意哪些动词是及物的,哪些是不及物的。特别是一词多义的动词往往有两种用法。解决这一问题唯有在学习过程中多留 意积累。2) 不能用于被动语态的及物动词或动词短语:fit, have, hold,
19、marry, own, wish, cost, notice, watch agree with, arr ive at / in, shake hands with, succeed in, suffer from, happen to, take p art in, walk into, belong tothis key just fits the lock.your story agrees with what had already been heard.3) 系动词无被动语态( keep 除外):appear, be become, fall, feel, get, grow, l
20、ook, remain, seem, smell, sound, stay, taste, turnit sounds good.4) 带同源宾语的及物动词,反身代词,相互代词,不能用于被动语态:die, death, dream, live, lifeshe dreamed a bad dream last night.5) 当宾语是不定式时,很少用于被动语态。(对) she likes to swim.(错) to swim is liked by her.四、 使用被动语态应注意的几个问题:1. 不及物动词无被动语态。what will happen in 100 years?the d
21、inosaurs disappeared about 65 million years ago.2. 有些动词用主动形式表示被动意义。this pen writes well. this new book sells well.3. 感官动词或使役动词使用省略 to 的动词不定式,主动语态中不带 to ,但变为被动语态时,须加上 to 。例 : make somebody do something somebody+ be +made to do something see somebody do something somebody +be +seen to do somethinga gi
22、rl saw my wallet drop when she passed by.my wallet was seen to drop by a girl when she passed by. the boss made the little boy do heavy work.the little boy was made to do heavy work by the boss.4. 如果是接双宾语的动词改为被动语态时,直接宾语 (物)作主语,那么动词后要用介词,这个介词是由与其搭配的动词决定。he gave me a book.a book was given to me by him
23、. he showed me a ticket.a ticket was shown to me by him. my father bought me a new bike. a new bike was bought for me by my father.5. 一些动词短语用于被动语态时,动词短语应当看作一个整体,而不能丢掉其中的介词或副词。we cant laugh him. he cant be laugh by us.he listens to the radio every day. the radio is listened to by him every day. the n
24、urse is taking care of the sick man. the sick man is being taken care of by the nurse.副词副词的分类副词主要用来修饰动词,形容词,副词或其他结构。1、表频率的副词常见的频率副词有:always,often,usually,sometimes,never,ever,hardly,seldom. 它们一般在系动词、情态动词和助动词之后,行为动词之前.he always goes to school on foot. she has never been to beijing. she is often late
25、for work.2、表示方式的副词与方式相关的副词,这类词通常由形容词+ly 转化而来。如safely,quietly,quickly,politelyloudly, luckily ,happily ,easily ,carefully, slowly , suddenly 以及 fast,late,hard,early 等。此类副词位于动词之后,如果是及物动词一般位于宾语之后。the children are dancing happily. they work hard.the students did their homework carefully. 3程度副词与程度相关的副词有:
26、very , much , only, quite , as, too, toofor, tooto do, well, almost, even, a little , enough , rather, a lot , so,such , badly, nearly , further , really , widely , hardly , a bit 等。它们一般位于被修饰的词前面,但enough 要放在被修饰的词后面。i can hardly know her name.the cake is so delicioushe was badly hurt .he worked hard
27、enough. 4表时间、地点、方向的副词(1) 与时间相关的副词有: ago ,already, before, early, long, late, just, now, once, soon,since, today, tomorrow ,tonight ,yesterday, yet 等。它们通常位于句末,有些也可位于句中如:already 等。theyll come back soon. he lived here ten years ago .they have finished the work already.=they have already finished the wo
28、rk.(2) 与地点、方向相关的副词经常位于动词之后与动词搭配构成短语动词。outside, inside , upstair ,here ,there ,home, near, come back , turn left , go out 5疑问副词和关系副词(1) 常用的疑问副词:when,where ,why ,how,how old, how long, how soon, how often, how far 等以及 perhaps,maybe,instead 等,通常用于句首。maybe/perhaps he is at home. how did you go there ?wh
29、en was he born ? how often do you see a movie ?how soon will your father come back?(2) 关系副词主要有四个,即 when, where, why,how 等。关系副词常用来引导从句。1. 副词的位置和排序(一)、副词的位置:1) 在动词之前。2) 在 be 动词、助动词之后。3) 多个助动词时,副词一般放在第一个助动词后。 注意:a. 大多数方式副词位于句尾,但宾语过长,副词可以提前,以使句子平衡。we could see very clearly a strange light ahead of us.b.
30、 方式副词 well,badly 糟、坏,hard 等只放在句尾,如:hespeaks english well.(二)、副词的排列顺序:1) 时间,地点副词,小单位的在前,大单位在后。2) 方式副词,短的在前,长的在后,并用 and 或 but 等连词连接。please write slowly and carefully.3) 多个不同副词排列:程度+地点+方式+时间副词。注意:副词 very 可以修饰形容词,但不能修饰动词。改错:(错)i very like english.(对)i like english very much.注意:副词 enough 要放在形容词的后面,形容词 en
31、ough 放在名词前后都可。i dont know him well enough. there is enough food for everyone to eat.there is food enough for everyone to eat.副词的用法1).作状语修饰动词,位于动词后。he walked quietly into his bedroom. it is raining hard . 2).作状语修饰形容词,位于形容词前。out.you have a very nice watch. the machine is too heavy.3). 作状语修饰另一副词,位于另一副词
32、前。有时候也修饰整个句子you walked too slowly,i couldnt wait for you.unfortunately ,he was4). 作表语,位于系动词之后。how long will she be away?is your mother in ? 5).作宾语补足语,位于宾语之后。ask him in . i saw him out . 6).作定语,位于名词后。the girl herethe boy over therethe man upstairson ones way home副词的比较等级1、副词比较等级的构成(1) 副词的比较等级与形容词相似,也有
33、比较级和最高级。(2) 绝大多数的副词比较级和最高级都是在其前面加上 more 和 most 构成的,有少数单音节和个别双音节的副词是在末尾加 er , est 构成。slowly- moreslowly- most slowlycarefully-more carefully most carefully fast-faster-fastest(3) 还有一些副词的比较级和最高级是不规则的。例如:well-better-bestbadly-worse-worstfar-farther/further-farthest/furthest much more-mostlittle-less-le
34、astlittle-less-least2、副词比较等级的用法(1) 副词的同级比较用 (not)as+副词原级+as .jim did the work as well as lilei.i cant run as fast as you .(2) 两者之间进行比较常与 than 连用。he speaks english better than you . tom works harder than jim .(3)表示三者、三者以上之间的比较用副词最高级,用不用定冠词 the 皆可, 通常有一个表示范围的短语。例如:the boy writes most carefully of the
35、four.jim did worst in the exam in his class yesterday.一、 兼有两种形式的副词1) close 与 closelyclose 意思是近; closely 意思是仔细地he is sitting close to me.watch him closely. 2)late 与 latelylate 意思是晚; lately 意思是最近you have come too late. what have you been doing lately? 3)deep 与 deeplydeep 意思是深,表示空间深度;deeply 时常表示感情上的深度,
36、深深地he pushed the stick deep into the mud. even father was deeply moved by the film.4)high 与 highlyhigh 表示空间高度;highly 表示程度,相当于 muchthe plane was flying high.i think highly of your opinion. 5)wide 与 widelywide 表示空间宽度;widely 意思是广泛地,在许多地方he opened the door wide.english is widely used in the world. 6)fre
37、e 与 freelyfree 的意思是免费;freely 的意思是无限制地you can eat free in my restaurant whenever you like. you may speak freely;say what you like.易混点清单一、how long,how often,how soon,how far 的用法区别1. how long“多长”,询问动作在时间上所持续的长度。其答语部分或划线部分可能是:1)“for + 时间段”,有时可能没有介词 for。如:-how long did he wait for you here?- for two hour
38、s.it took him 20 minutes to finish his homework. (对话线部分提问)how long did it take him to finish his homework?2)“since + 具体时间”,“since + 时间段 + ago”或者“since + 从句”。如:-how long are you feeling like this? -since last night. 3)表示时间的 betweenand,fromto等介词短语。如:they were playing football from 9:00 to 10:00 yester
39、day. (对话线部分提问)how long were they playing football yesterday?另外,how long 也可以询问某事物的具体长度。如:-how long is the desk? -1.2 meters. 1.2 米。2. how soon“多久,多快”,询问动作在将来要经过多长时间才会发生。其答语部分或划线部分可能是:in + 时间段。如:hes going to zhengzhou in two days. (对话线部分提问)how soon is he going to zhengzhou?3. how far“多远”,询问路程、距离。如:how
40、 far is it from here to school? 4.how often指每隔多久,主要用来对频度副词或状语(如:once a week,three times a month 等)提问。如a:how often does he come here? b:once a month.a:how often do you visit your mother? b:once a week.二、hard 和 hardly 的区别(一)、hard 可用作形容词或副词:1. 当 hard 用作形容词时,意为“困难的、坚固的、努力的”等。例如:its hard for old people t
41、o change their ways. steel is harder than wood.2. 当 hard 用作副词时,意为“努力的、困难的、猛烈地”等。例如:does tom work hard at his lessons? its raining hard outside now. dont go out.tv.(二)、hardly 只能用作副词,意为“几乎没有、几乎不”。例如:i can hardly see anything on the blackboard. my father hardly ever watches3、much too 和 too much 区别(一)(t
42、oo) much 中心词是 much1. 相当于形容词,意为“more than enough”,用在不可数名词前面作定语或在系动词后面作表语。如:americans eat too much meat in my opinioni drank too much cola last nightthe work is too much for her shes afraid the trip will be too much forme2. 相当于名词,在句子中作主语或宾语。如:too much was happening all at onceyou have given me too muc
43、h 3相当于副词,在句子中作状语。如:you work too muchshe talks too much(二)(much) too 中心词为 toomuchtoo 的用法比较简单,只用作副词作状语,但它不单独使用,在句子中要修饰形容词或副词,但不修饰动词。如: you are much too kind to meits much too coldyou are driving much too fast【练习】1.we should not eat junk food.a.too much b.much too c.too many d.much too(a)2.itshot in au
44、gust in nanjing .3.a .many too b . much too c . very too d .to much(b) 4.we dont havetime to work every year.5.a much too b so many c too much d too many(c)四、also ,too, as well ,either, neither 意思 区别1) also 表示也是比较正式的用词, too 是普通用词,口语中用的多,使用时应注意: also一般用于句子中,其位置在行为动词之前,动词 to be 之后。如有助动词或情态动词,一般应在助动词或情
45、态动词后,为了强调,也可放在前面。例如:i also went. you are also wrong.too 常置于句末,前面可用逗号,如置于句中,其前后均有逗号。例如he is a singer ,too. he,too,is a singer.注意: also,too 只能用于肯定句。2) eitherneithereither 表示“也”,只能用在否定句中,必须放在句末。例如:he didnt go there. i didnt either. neither 表示两者都不。in neither case can i agree. neither of them wants to st
46、op for a rest3) as well as 作并列连词相当于 not onlybut also 和 no lessthan,但 not onlybut also 侧重在后项,as well as 和 no lessthan 侧重在前项。例如:we must learn to look at problems all-sidedly, seeing the reverse as well as theobverse side or things. a true man should be practical as well as far-sighted.在否定句中,as well as
47、 的位置不同,句意往往有很大差别。比较下面的句子:he, as well as she, will not come. he will not come as well as she.(否定前者,肯定后者) henry, as well as his brother, doesnt work hard. henry doesnt work hard as well as him brother.as well as 连接的应是平等成分,都作主语或都作宾语等。例如:she was there as well as me. (误) she was there as well as i .(正) 五
48、、already、yet、still 的区别1) already 是已经,用在肯定句中,用在完成时中比较多,比如 ive already been to london.2) yet 是还用于否定句,如 i havent gone there yet.此外 yet 还有但是的意思,有时可以和 but 互换,比如 the authorities claim that the situation in the area has been under control, yet the fact is not the case.( 当 局声称此地区局势已得到控制,但事实并不是那么回事.)3) still
49、 是仍然,如 he should have been killed in the accident, but he is still alive.(他本应在事故中丧生,但他活着.)六、ago 和 before 的区别1. ago表示“从现在起的若干时间以前”,意思是“距今以前”,需和过去时或过去进行时连用。before 泛指“从过去起的若干时间以前”,意思是“距过去某时以前”“与其(毋宁)”,常和完成时连用,尤其在间接引语中,如: his parents died ten years agohe said that his parents had died ten years before i
50、 have never been there beforei visited him three days ago, but he had gone to shanghai a week before2. 如果不具体表明多少时间以前,只用 before 不用 ago,意为“从前、以前”。before 仍以副词的形式置于被修饰语后,常与完成时候过去时连用。如:have you seen this film before? he asked me whether i had been to the great wall before3. 表示在某一点时间或事件以前时,只用 before 不用 ag
51、o,这种用法是将before 当作介词或连词使用。ago 不具有这一功能。如:they will come back before six oclockit is hoped that this will be finished before the year 1995另外,before 在句中的含义较多。不少句子中,before 虽然引导的也是一个时间状语,但是译成汉语时却不必译为“在以前”。a.如果 before 引导的从句动作发生得晚或慢,可译成“才”。这是主句主语或是名词、代词,或用 it 作形式主语he had almost knocked me down before he saw
52、 meit will be hours before he arrives you must sow before you can reap b.如果强调从句动作发生之前,主句动作已发生,可译成“未就”或“还没有就”。 before i could get in a word he had measured melu ban built nine pavilions, but before he could finish the tenth, he heard a cock crowingc.有些句子中的 before 可译为“先然后”、“先再”。dont count the chickens
53、 before they are hatched 不要乐观得太早。be pupil before you become a teacher先做学生,再做先生。有些句中的 before 还可译为“在内”、“趁”、“没”。they arrived before i expectedstudy hard before it is too latei had better go now before it is too late . i will be through this book before three days have passedbefore sbknew it 一类习惯说法,常译为“
54、不知不觉就”、“还没弄清就”、“不知怎么地就”,如time passed quickly and three months went by before aqiao knew ithe fell from the tree before he knew it4. 加强语气,表示“早已”的意思或使叙述显得更生动,ago 也可以用于完成时。如:i had thought that he had died at least twenty years agoin fact, i have long time ago known the secret5. 在表示对过去事情猜测的“情态动词have过去分词”或“动词的非谓语形式have过去分词”的结构中,ago 也可以和完成时连用。如:the building is said to have been destroyed in a fire two years agotheincident must taken place years agoyou can not have met him a moment agohe may have left an hour agohaving
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