外研版Book2Module3GrammarPPT(精品).ppt
when,while,as,before,after,until/till,since,ever since,whenever,as soon as,no sooner than,hardly/scarcely when 等等1)常见的连接时间状语从句的连接词有常见的连接时间状语从句的连接词有:when 意为意为这时这时(at this time)或或那时那时(at that time)时，常用于下时，常用于下列句型：列句型：Somebody was doing something when某人正在做某人正在做 突然突然 Somebody was about to do something when.某人正要做某人正要做 突然突然 Somebody had just done something when某人刚刚干了某人刚刚干了这时这时e.g.1.I was reading English when my teacher came in.2.I was about to talk in the classroom when the teacher came in.3.I had just made the mistake when the teacher came in.观察：观察：While they were doing homework,someone broke into the house.While he was still a teenager,he was a big star.分析：分析：while引导的从句表示引导的从句表示“在在过程中过程中”，强调某一段时间内主句和从句的动作，强调某一段时间内主句和从句的动作在同一时期发生。从句的动作表示较长在同一时期发生。从句的动作表示较长时间，因此常用延续性动词。时间，因此常用延续性动词。e.g.She is tall while I am short.while 表示强烈的对比关系，可译成表示强烈的对比关系，可译成“然然而而”While I was studying English,he was playing football.强调两个动作同时进行强调两个动作同时进行两种情况一起发展变化两种情况一起发展变化试观察：试观察：1)As they were picking tea,the girls were singing happily.2)As he grew older,he found it difficult to compose good music.分析：分析：as引导的从句表示引导的从句表示“当当时；一边时；一边一边一边”，主句和从句的动作同时发生，强调伴随。，主句和从句的动作同时发生，强调伴随。有时可译为有时可译为“随着随着”。1.他从学校回来时，他妈妈正在烧饭。他从学校回来时，他妈妈正在烧饭。2.他在看书时，他的妻子一直在烧饭。他在看书时，他的妻子一直在烧饭。3.他一边烧饭一边唱歌。他一边烧饭一边唱歌。4.我们正要动身，这时天突然下雨了。我们正要动身，这时天突然下雨了。5.你喜欢踢足球而我喜欢弹钢琴。你喜欢踢足球而我喜欢弹钢琴。6.随着时间的推移，我们都渐渐长大了。随着时间的推移，我们都渐渐长大了。Translate these sentences into English.Possible answers:1.When he returned,his mother was cooking.2.While he was reading,his wife was cooking.3.As he cooked,he sang.4.We were about to start when it began to rain.5.you like playing football while I like playing the piano.6.As time went by,we all grew up.2)时间状语从句可以转换成分词短语。时间状语从句可以转换成分词短语。如如:Boys need to develop their bodies fully before they attempt such difficult exercise.Boys need to develop their bodies fully before attempting such difficult exercise.After he worked there for 30years,Haydn moved to London.Note:时间状语从句转换成分词短语时时间状语从句转换成分词短语时,时时间状语从句的主语和主句主语必须间状语从句的主语和主句主语必须一致才可以。一致才可以。Having worked there for 30 years,Haydn moved to London.1.过去完成时的构成过去完成时的构成:2.“助动词助动词had+过去分词过去分词”The public wondered why the president hadnt attended the top conference.2.过去完成时的用法过去完成时的用法:1)过去完成时主要用来表明在某个时过去完成时主要用来表明在某个时 间或动作之前已经发生的动作间或动作之前已经发生的动作,它它 表示时间是表示时间是“过去的过去过去的过去”。如。如:The patient had died when the doctor arrived.Up until then they had just finished half the work.He had pressed the button before we could stop him.When I had finished my everyday work,I did some gardening.2)如果发生的动作很短暂如果发生的动作很短暂,或两个动作紧或两个动作紧接着发生接着发生,则常用一般过去时代替过去则常用一般过去时代替过去完成时。尤其是在含有完成时。尤其是在含有before,after,as soon as的复合句中的复合句中,因为它们本身的词因为它们本身的词义就可以表示出先后顺序。义就可以表示出先后顺序。如如:Just before I left New York,I sent an e-mail to Mr White,my teacher in the university.3)过去完成时还可以表示未能实现的希过去完成时还可以表示未能实现的希望、愿望等望、愿望等,常用的动词有常用的动词有except,hope,mean,suppose,think 等。等。如如:I had hoped to send him a telegram to congratulate him on his marriage,but didnt manage it.Mother had expected me to come to her birthday party,but I really had a lot of important work to do.When he got home from work,he was very tired.He opened the door,turned on the light,washed his face and went to bed without taking off his clothes.Note:1.当动作紧接着发生当动作紧接着发生,次序明显时次序明显时,只需只需 用一般过去时。用一般过去时。2.与某个时间段或时间点连用时与某个时间段或时间点连用时,一般一般过去时表示动作在这个时间发生过去时表示动作在这个时间发生,而而过去完成时表示动作在这个时间之前过去完成时表示动作在这个时间之前就已经完成。就已经完成。如如:He learned Russian during his stay in Russia.He had already learned Russian during his stay in Russia.3.在间接引语中，与过去完成时连用在间接引语中，与过去完成时连用的时间状语从句常用一般过去时代的时间状语从句常用一般过去时代替过去完成时。替过去完成时。如：如：He told me somebody had phoned when I was out.John said the film had been on five minutes when he got to the cinema.1.Translation.1)我把刚买的书丢了。我把刚买的书丢了。I lost the book I had just bought.2)我到达汽车站的时候我到达汽车站的时候,车已经开走了。车已经开走了。The bus had gone when I arrived at the bus stop.3)Tom本来想去拜访他的奶奶本来想去拜访他的奶奶,但是天但是天气不好使他改变了主义。气不好使他改变了主义。Tom had thought of visiting his grandmother,but the bad weather made him change his mind.4)Jack昨天为什么没去参加会议昨天为什么没去参加会议?他去北京了。他去北京了。Why didnt Jack attend the meeting yesterday?He has gone to Beijing.5)最后最后Mary被北京大学录取了被北京大学录取了,为此为此她尝试了五次。她尝试了五次。Finally Mary was admitted by Beijing University,for which she had tried five times.He said that he _(see)you before.had seenBy last year they _(learn)2,000 words.had learnt1)他说他以前见过你。他说他以前见过你。2)到去年为止他们已经学了到去年为止他们已经学了2000个单词了。个单词了。2.Finish the sentences.3)到了六点钟为止，他们已经工作了八到了六点钟为止，他们已经工作了八小时了。小时了。By six oclock they _(work)for eight hours.4)我到广州时，他在那里很长时间了。我到广州时，他在那里很长时间了。When I came to GZ,he _(be)there for a long time.had workedhad been5)到上个月中旬我们在北京住了有五年到上个月中旬我们在北京住了有五年时间了。时间了。By the middle of last month we _(live)in Beijing for five years.6)她到家之前她的孩子已经睡着了。她到家之前她的孩子已经睡着了。When she got home her children _(sleep).had livedhad slept7)在他们到达之前电影已经开始了。在他们到达之前电影已经开始了。Before they arrived here the film _ already _(start).hadstarted1)I went to Toms house but he _(go)out.2)Annie told me that his father _(go)to Paris and he _(come)back in a few days.3)My friend _(buy)the car two years ago.He _(buy)it for two years.had gonehad gonewould comeboughthas had3.Fill in the blanks.Finish the exercises in Grammar.
