八个时态完全解析一般现在时现在完成时现在完成时过去完成时将来时过去时).ppt

一般现在时,1.表经常发生的事情、存在的动作或状态eg She sings with the band Crazy Boy.2.表内心活动感情等eg I dont think you are right.3.描述客观真理eg Birds fly in the sky.4.表预定的行为eg The train leaves at 9.,基本结构,一般现在时除主语是第三人称单数时谓语动词要加s外，一律用动词原形。 例句： I go to school at 6 every morning. 每天早上我七点去上学。 Summer follows spring. 春天之后是夏天。 The sun rises in the east. 太阳从东方升起。 I learned that the earth goes around the sun when I was in primary school. 我在小学就学过地球是围绕太阳转的。 Pride goes before a fall. 骄者必败。,一般过去时,1.表过去发生的事情或存在的状态eg Suddenly,the clouds cleared and the rain stopped.2.表过去经常发生的事情eg I was very thin in my childhood.3.带有确定的过去的时间状语eg Did you meet yesterday? He left just now.,基本结构,一般过去时用动词的过去式构成，即在动词原形后加ed。 例句： He was here just now. 他刚才还在这里。 What did you do yesterday? 你昨天做了什么事？ We often played together when we were children. 我们小时候常在一起玩。 He used to smoke a lot, but he doesnt now. 他过去经常抽烟，但现在不抽了。 Whenever we were in trouble, he would help us. 每当我们遇到困难，他都会帮助我们。 At that time she was very good at English. 那时她英语学得很好。 He said he would wait until they came back.,一般将来时,1.要在将来的某个时间内发生，是“纯粹的将来动作”。eg I shall / will not be free tomorrow.2.表说话人的意图、打算或某种可能性eg Who is going to speak first? 3.按计划要发生的动作或命令他人做某事eg The new bridge is to open to traffic in 3 days.,基本结构,由 will 加动词原形构成，当主语是第一人称时，也可以用 shall 加动词原形。 例如： Telephone me this evening. Ill be at home. 今晚给我打电话，我会在家。 Ill (shall/will) do a better job next time. 下次我要干得好些。 The car wont start. 车开不了啦。 Oil and water will not mix. 油和水没法混在一起。,现在进行时,1.说话、写文章的当刻正在发生的动作eg They are having a football match.2.现阶段一直在进行的动作eg He is preparing for CET Band Six.3.表示说话人的情感，如赞许、批评等eg She is often doing well at school. 4.表示在近期按计划或安排要发生的动作eg Are you staying here till next week?,基本结构,现在进行时由 am/is/are 加现在分词构成。例句：Theyre having a meeting. 他们在开会。 Im studying at an evening school. 我在上夜校。 Mike is coming home on Thursday. 迈克星期四回来。 Theyre having a party next week. 下星期他们将开一个晚会。 Youre always interrupting me! 你老打断我的话!(抱怨) My father is always losing his car keys. 我爸老丢车钥匙。(不满) Shes always helping people. 她老是帮助别人。(赞扬),过去进行时,1.表示在过去某时刻正在进行的动作eg At this moment yesterday, I was packing for camp.2.用于故事的开头，交代故事发生的背景情况eg One night, he was typing in his study . Suddenly , a man broke 3.表示在过去的未来时间要发生的动作eg We left there when its getting dark.,过去完成时,1.发生在“过去的过去”eg When I woke up, it had stopped raining. 2.与一个表示过去的时间状语连用eg Peter had collected more than 300 Chinese stamps by the time he was ten.3.在过去某时之前开始一直延续到这一时间eg By the end of last year, he had worked in the factory for twenty years.,基本结构,由 had 加动词的过去分词构成。 例句： She said she had never been to Paris. 她说她从未去过巴黎。 When the police arrived, the thieves had run away. 警察到达时，小偷们早就跑了。 By the time he was twelve, Edison had begun to make a living by himself. 到了十二岁那年，爱迪生开始自己谋生。,现在完成时,1.表示截止现在业已完成的动作eg By now, I have collected all the data that I need.2.表示发生在过去而对现在产生影响、带来结果的动作eg She has been to the United States.3.表示过去发生的动作持续到现在，并可能还要延续eg I have learned English for 8 years.,基本结构,由 have 加动词的过去分词构成，主语是第三人称单数时，要将 have 改为 has。 例句： I have seen the film already. 我已经看过那部电影了。(现在我知道电影的内容了。) Have you seen my bag? 你看到我的手提包了吗? (你知道它在哪里? ) She has been a dancer for ten years. 她已当了十年的舞蹈演员了。 Weve planted thousands of trees in the past few years. 过去几年我们种了成千上万棵树。,过去将来时,1.宾语从句或间接引语中eg He didnt expect that we would all be there.2.表示过去习惯性的动作eg During that period, he would do this every day.3.表示过去的愿望、倾向，多用于否定句eg They knew that we would never permit such a thing.,基本结构,过去将来时由would, was/were going to, was/were to was/were about to等加动词原形构成, 也可由was/were on the point of加动名词构成。 例句： I knew you would agree. 我知道你会同意的。 I said I would arrange everything. 我说我来安排一切。,