1、-Yes, I bought this radio here yesterday, but it desnt work.是的,我昨天在这里买的这台收音机,但它坏了。2、 构成一般现在时常以动词原形表示,但当主语是第三人称单数时,应用动词的单数第三人称形式。-Youre drinking too much. 你喝的太多了。-Only at home. No one sees me but you.只是在家里。除了你又没别人看见。2、用法(1)表示现在经常发生或习惯性的行为或状态一般现在时表示现在经常发生或习惯性的行为或状态,常与usually, always, every day, twice
2、a week, seldom, sometimes等时间状语连用。I play ping-pong quite well, but I havent had time to play since the new year. 我乒乓球打得不错,但自从新年以来我一直没有时间打。He always sleeps with the windows open.他总是开着窗子睡觉。She is our English teacher.她是我们的英语老师。The children go to school at seven every morning.孩子们每天早晨七点上学。-Do you like the
3、 material?你喜欢这块料子吗?-Yes, it feels very soft.是的,这块料子手感很柔软。(2)一般现在时表示主语的性格、特征、能力等。He works hard .他工作很努力Does he like sports? 他爱好运动吗?She loves music.她喜欢音乐。(3)一般现在时表示客观事实或普遍真理,也用在格言中。The sun rises in the east.太阳从东方升起。Actions speak louder than words.百说不如一干。Water boils at 100.水在摄氏100度时沸腾。注意:主句中的谓语动词是过去时态,但
4、宾语从句中如果所说的是客观真理,它的谓语动词仍用一般现在时。Galileo insisted that the earth goes around the sun.伽利略坚持认为地球绕着太阳转。(4)在时间、条件、比较等状语从句中表将来的动作从句一般由when, if, after, before, as, as soon as, the minute, the next time, in case, though, till, until, unless, so long as, where, whatever, whenever等引导。The volleyball match will b
5、e put off if it rains. 如果下雨,排球赛将推迟。The new secretary is supposed to report to the manager as soon as he arrives. 新秘书一到就应该找经理报到。Ill begin the dictation when you are ready.如果你们准备好,我就开始听写。When they leave school, they will go to college.中学毕业后,他们去上大学。(5)表示安排或计划好的将来的动作,只限少数几个动词:go, come, leave, start等。The
6、 train starts at 10 o clock in the morning.火车在上午10点发车。Supper is at 5 today.今天五点开晚饭。The summer holidays begin next week.暑假从下周开始。(6)一般现在时描述过去时间的事实 这种用法多见于叙述代或口述往事,以增加描述的生动和真实感。The story describes how Walt Disney starts a company.这篇代章描述了沃尔特迪斯尼如何创办公司的情况。He says the river rises higher and higher, breaks
7、the bank and is filling all low places.他说河水越涨越高,漫过河岸,淹没低洼地。(7) 在新闻标题、小说和电影以及戏剧情节介绍、幻灯和图片的说明中常用一般现在时U.S. President holds talks with British Prime Minister. 美国总统同英国首相举行会谈。American Ambassador Leaves Beijing.美国大使离京。 二、一般过去时一般过去时表示过去某个时间发生的动作或状态,常和表示过去的时间连用,yesterday, last night, in 1990, two days ago等。也
8、表示过去经常或反复发生的动作,常和often, always等表示频度的时间状语连用。All morning as she waited for the medical report from the doctor, her nervousness grew. 整个早上,当她等待医生的医学报告时,她神经越来越紧张。I got up at 6:30 yesterday.我昨天6:30起床。He always went to work by bus last year.去年他总是坐公交车上班。-Nancy is not coming tonight. 南希今晚不来了-But she promise
9、d! 但是她曾经答应要来的。2、一般过去时的构成一般过去时由规则动词(-ed/-d)或不规则动词的过去时表示,除be外,其余动词没有人称和数的变化。各种动词的否定结构和一般疑问结构,与一般现在时的否定结构和疑问结构相同。规则动词的构成变化详见上一章动词的过去时形式部分。Old McDonald gave up smoking for a while, but soon returned to his old ways. 老麦克唐纳戒了一段时间烟,但不久又重蹈覆辙。She suddenly fell ill yesterday.她昨天突然病倒了。-We could have walked to
10、the station, it was so near.我们该步行到车站,这么近。-Yes. A taxi wasnt at all necessary. 是的,出租车一点也没必要。3、一般过去时的用法(1)表示过去某个特定时间发生的动作或存在的状态常有明确的时间状语,如yesterday,last night, some years ago,in1890等,以及由when等引导的时间状语从句。Tom didnt come to class yesterday.汤姆昨天没来上课。We went to dance last night.昨晚我们去跳舞了。-Hello! I didnt know
11、you were in London. How long have you been here? 喂!我不知道你在伦敦。你来多久了?-Your phone number again? I dint quite catch it. 请你再把电话号码说一遍好吗?我刚才没听清楚。-It is 9568442. 9568442。-Oh, its you! I dint recognize you.哇,是你呀!我没认出你来。-Ive just had my hair cut, and Im wearing new glasses.我刚理了发,而且我还带着新眼睛。-You havent said a wo
12、rd about my new coat, Brenda. Do you like it? 布伦达,你还没说我的新上衣怎么样呢,喜欢吗?-Im sorry I didnt say anything about it sooner. I certainly think its pretty on you.对不起,我还没顾上。我认为穿在你身上当然好看。(2)表示过去的习惯性或经常发生的动作常与often,usually,seldom等表示频度的副词连用。When I was in the countryside, I often called on my old friends there.我在乡
13、村里,经常去拜访那里的朋友。I went to the cinema once a week when I was at school.我上学时每周去看一场电影。表示过去经常或反复发生的动作,还可用used to 或would加动词原形表示。When I stayed at Aunt Lius ,she would tell me about the great changes which had taken place in the village since liberation.当我住在刘大娘家时,她常常告诉我解放以来农村发生的巨大变化。She used to go for a walk
14、 after supper, but now she prefers to stay at home.她过去晚饭后总出去散步,但现在她却喜欢呆在家里。(3)用来代替过去将来时在条件、时间状语从句中,常用一般过去时代替过去将来时。They said they would let us know if they heard any news about him.他们说如果听到什么关于他的消息,就通知我们。He promised that when he went to the bookstore, he would buy me a book.他答应去书店时为我买本书。He said he would not go if it rained.他说如果天下雨就不去了。They told us that they would not leave until she came back.他们告诉我们,直到她回来他们才会离开。(4)表示现在将来的时间在日常会话中,用一般过去时比用一般现在时较为婉转客气。能这样用的动词有:hope, wonder, want, think, intend等。Did you want to s
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