1、Period SixUnit 9 Wheels Period Six Grammar 课件（北师大版必修 3）.用所给词的适当形式填空1People _(enjoy)the benefits of cycling in Amsterdam for years.2Many people around the world _(enjoy)city centre streets without cars for many years.3Solar racers _(come)to Australia for years for the World Solar Car Challenge.4Peopl
2、e _(worry about)pollution caused by fuels like petrol and gas for a long time now.语法感知 have been enjoyinghave been enjoyinghave been cominghave been worried about本课栏目开关 语法感知 知识储备 Period Six5You _(design)solar racing cars for a long time.6 I _(interest)in cars since kindergarten.7I _(design)five or s
3、ix different cars so far.8I _(take part in)races for about four years.9How many races _ you _(take part in)?10I _(build)a new car with a team from Queensland University.have been designinghave been interestedhave designedhave been taking part inhavetaken part inhave been building语法感知 本课栏目开关 语法感知 知识储
4、备 Period Six.使用for或since以及现在完成进行时为每个情形写一句话例：There seems no end to the civil war in Silonia，which began three years ago.The two sides are still fighting.The two sides have been fighting for three years.1Paul is trying to set a new world record for playing the piano.He started 32 days ago，and he is st
5、ill playing.Paul _.2The police have arrested a man.They began questioning him early this morning，and they are continuing to do so.The police _.has been playing the piano for 32 dayshave been questioning a man since earlythis morning语法感知 本课栏目开关 语法感知 知识储备 Period Six3That dog is a real nuisance.It bega
6、n barking half an hour ago，and it hasnt stopped since.That dog _.4Our friends are going on holiday to India soon.Their preparations started months ago.Our friends _.5The government cant decide what they should do about rising crime.Its a big problem.Discussions began last year and have not yet finis
7、hed.The government _.has been barking for half an hourhave been preparing(for their holidayhave/has been discussing(theproblem of)rising crime since last yearin India)for months语法感知 本课栏目开关 语法感知 知识储备 Period Six现在完成进行时现在完成进行时由“have/has been现在分词”构成。1现在完成进行时的用法(1)现在完成进行时表示动作从过去某一时刻开始一直延续到现在或离现在不远的时间。其动作
8、是否继续下去，则由上下文而定。这个时态多用于延续性动词，如 live，learn，lie，stay，sit，wait，stand，rest，study 等，并常和 all this week，this month，all night，all the morning，recently 等状语以及 since 和 for 引导的时间状语连用(与since 和 for 连用时，动作常会继续下去)。知识储备 本课栏目开关 语法感知 知识储备 Period SixI have been waiting for an hour and he still hasnt turned up.我已经等了一个小时了
9、，可他还没来。Ive been writing letters all this morning.我写了一上午信。(动作不再继续下去)How long have you been living here?你在这里住了多久了？知识储备 本课栏目开关 语法感知 知识储备 Period Six(2)有时现在完成进行时所表示的动作并不是一直在不停地进行，而是在断断续续地重复。这时现在完成进行时可用于瞬间动词。Hes been shaving since last year.他是从去年开始刮脸的。You have been saying for a year that you will study ab
10、road.整整一年你都在说要出国学习。知识储备 本课栏目开关 语法感知 知识储备 Period Six2现在完成进行时中时间状语的省略现在完成进行时在上下文清楚时亦可不用时间状语。这种现在完成进行时多指“刚才”或“近来”发生的动作，一般不再继续，并往往含有一种直接的结果。Youve been working too hard.你工作太辛苦了。(直接结果可能是你一定很累了)Youve been smoking again.你又抽烟了。(暗含结果你身上有烟味)Whos been insulting you?谁欺负你了？(对方可能在哭)知识储备 本课栏目开关 语法感知 知识储备 Period Six
11、3现在完成进行时的感情色彩现在完成进行时和其他进行时态一样，也可以带有感情色彩。I have been wanting to meet you for a long time.和你见面是我盼望已久的事。Too much has been happening today.今天发生太多事了。知识储备 本课栏目开关 语法感知 知识储备 Period Six现在完成时与现在完成进行时现在完成进行时是兼有现在完成时和现在进行时二者基本特点的时态。由于它有现在完成时的特点，所以它可以表示某一动作对现在产生的结果或影响；由于它有现在进行时的特点，所以它也可以表示某一动作的延续性、临时性、重复性、生动性乃至感
12、情色彩。知识储备 本课栏目开关 语法感知 知识储备 Period Six现在完成时和现在完成进行时的比较：1现在完成进行时可以表示动作的重复，而现在完成时一般不表示重复性。Have you been meeting him recently?你最近常和他见面吗？Have you met him recently?你最近见过他吗？2现在完成进行时有时含有感情色彩，而现在完成时一般是平铺直叙。I have been waiting for you for two hours.我一直等了你两个小时。(可能表示不满)I have waited for you for two hours.我等了你两个小
13、时。(说明一个事实)知识储备 本课栏目开关 语法感知 知识储备 Period Six3现在完成进行时强调动作，而现在完成时强调结果。Who has been eating the oranges?谁一直在吃橘子呀？(还剩余一些)Who has eaten the oranges?谁把橘子吃了？(强调吃得一个不剩)4有些动词不能用于现在完成进行时，但可用于现在完成时。如：表示状态的动词：be，have，exist 等；表示感情的动词：like，love 等；表示感觉的动词：see，hear，know 等。He has had a cold for a week.他已经感冒一周了。知识储备 本课栏
14、目开关 语法感知 知识储备 Period Six5与一段时间连用时可以用现在完成时也可以用现在完成进行时；但与次数连用时只能用完成时，不能用现在完成进行时。It hasnt rained for six weeks.已经六个星期没下雨了。It has been raining since yesterday and it is stillraining.从昨天起，雨就没停过，而且现在还在下。He has rung me up five times since 12 oclock.从十二点后，他就给我打了五次电话。He has been ringing me up all the morning
15、.他整个上午老给我打电话。知识储备 本课栏目开关 语法感知 知识储备 Period Six6这两种时态都可以表示动作的延续，区别在于：现在完成进行时更强调动作的延续性，可说是现在完成时的强调形式。We have been living here for ten years.We have lived here for ten years.我们在这里住了十年了。7在没有时间状语的情况下，现在完成进行时表示动作仍在进行，而现在完成时则表示动作到现在已经结束。The students have been preparing for the exam.(还在进行)学生们一直在为考试做准备。知识储备 本
16、课栏目开关 语法感知 知识储备 Period Six题组训练用所给词的适当形式填空1In order to find the missing child，villagers _(do)all they can over the past five hours.2Alvin,are you coming with us?Id love to,but something unexpected _(come)up.3I remember you were a talented pianist at college.Can you play the piano for me?Sorry,I _(not
17、，play)the piano for years.have been doinghas comehavent played知识储备 本课栏目开关 语法感知 知识储备 Period Six4Look!Somebody _(clean)the sofa.Well,it wasnt me.I didnt do it.5The manager _(tell)the workers how to improve the program since 9 am.6Tom _(work)in the library every night over the last three months.7In the
18、 last few years thousands of films _ _(produce)all over the world.8Im sure you will do better in the test because you _(study)so hard this year.has cleanedhas been tellinghas been workinghave beenproducedhave been studying知识储备 本课栏目开关 语法感知 知识储备 Period Six9His first novel _(receive)good reviews since it came out last month.10It is the most instructive lecture that I _(attend)since I came to this school.has receivedhave attended知识储备 本课栏目开关 语法感知 知识储备