2021高中英语 Unit 3 Computers period 3课件 新人教必修2.ppt

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1、3 知识讲练课Unit 3 ComputersPeriodWords and expressions:1.Over time I have been changed quite a lot.经过经过一段一段时间时间我已改我已改变变了了许许多。多。【观观察思考察思考】1)Tastes in food also change over time.食物的味道食物的味道时间时间久了也会久了也会变变。2)As time went by,I was made smaller.随着随着时间时间的推移，我被做的越来越小。的推移，我被做的越来越小。3)With time going by,they became

2、 close friends.随着随着时间时间的推移，的推移，他他们们成了好朋友。成了好朋友。【归纳总结归纳总结】1.over time _2.as time goes by _3.with time going by_【点拨点拨】1.随着时间的推移随着时间的推移,久而久之久而久之 2.随着时间随着时间 的逝去的逝去 3.随着时间流逝随着时间流逝【尝试运用尝试运用】句子转换句子转换1)As time went by,he gradually get used to life there._,he gradually get used to life there.2)Table manners

3、change over time，they follow the fashion of the day._,table manners changed，they follow the fashion of the day.3)As time went on,they learned the skill of fishing._ they learned the skill of fishing.【点拨点拨】1)With time going by 2)As time went on/With time going on3)Over time2.As a result I totally cha

4、nged my shape.因因此我完全改变了我的形象。此我完全改变了我的形象。【观察思考观察思考】1)He didnt work hard.As a result he failed his exam.由于他没用功，结果考试失败。由于他没用功，结果考试失败。2)He was late as a result of the snow.由于大雪的原因，他迟到了。由于大雪的原因，他迟到了。【归纳总结归纳总结】1.as a result _2.as a result of _【点拨点拨】1.结果，因此，表示结果结果，因此，表示结果 2.由于由于，表示原因，表示原因【尝试运用尝试运用】完成句子完成句子

5、1)It rained heavily outside,and _ we had to stay at home.2)_ the pilots strike,all flights have had to be cancelled.由于飞行员罢工，所有的航班都被迫取消了。由于飞行员罢工，所有的航班都被迫取消了。3)Jenny nearly missed the flight _ doing too much shopping.由于过度购物，詹妮几乎错过班机。由于过度购物，詹妮几乎错过班机。【点拨点拨】1)as a result 2)As a reslt of 3)as a result of3

6、.In a way,our programmer is like our coach.从某种从某种程度上看，我们的程序员就像是我们的教练。程度上看，我们的程序员就像是我们的教练。【观察思考观察思考】1)My mother always talks with me in a friendly tone.In a way,she is more like a friend than a mother.我妈妈总是以一种朋友般的语气跟我说话。从某种程度我妈妈总是以一种朋友般的语气跟我说话。从某种程度上如其说是母亲倒更像朋友。上如其说是母亲倒更像朋友。2)I couldnt get through th

7、e door because there was a big box in the way.由于有个大箱子挡住了路，由于有个大箱子挡住了路，我过不去这个门。我过不去这个门。3)I came across him on my way to the cinema.在我在我去电影院的路上偶然遇到他。去电影院的路上偶然遇到他。【归纳总结归纳总结】1.in a way _ 2.in the/sbs way _ 3.on ones way to._ 4.in no way _【点拨点拨】1.在某种程度上在某种程度上 2.挡着挡着的路；的路；妨碍妨碍 3.在某人去在某人去的路上的路上 4.决不决不【点拨点拨

8、】1)社交生活妨碍了她的学习。社交生活妨碍了她的学习。2)我们绝不允许这继续发生。我们绝不允许这继续发生。3)在我去上班的路上，我遇到了一位老朋友。在我去上班的路上，我遇到了一位老朋友。4)从某种程度上我高兴你犯了那个错，因为它将对你从某种程度上我高兴你犯了那个错，因为它将对你起到个警示作用起到个警示作用。【尝试尝试运用运用】把下列句子翻把下列句子翻译译成成汉语汉语。1.Social life goes in the way of her studies.2.In no way can we allow this to continue.3.I came across an old frien

9、d on the way to work.4.In a way Im glad that you made that mistake,for it will serve as a warning for you.4.After all,with the help of my electronic brain which never forgets anything,using my intelligence is what Im all about.不管怎不管怎样样，在我，在我过过目不忘目不忘电电子子脑脑的帮助下，运用智能的帮助下，运用智能就是我的一切。就是我的一切。【观观察思考察思考】1)I

10、 am making progress with the help my teachers.我在老我在老师师的帮助下有了很大的帮助下有了很大进进步。步。2)The old man walks with the aid of a heavy stick.这这位老人借助一根笨重的手杖走路。位老人借助一根笨重的手杖走路。3)They succeeded by means of hard work.他他们们依靠努力工作而依靠努力工作而获获得成功。得成功。【归纳总结归纳总结】1.with the help of _ 2.with the aid of _3.by means of _【点拨点拨】1.在在

11、.帮助下帮助下2.在在.协助下协助下3.用用.的方法，凭借，借助的方法，凭借，借助【尝试运用尝试运用】把下列句子翻成英语。把下列句子翻成英语。1）现在有了电脑的帮忙，我们能降低产品的成）现在有了电脑的帮忙，我们能降低产品的成 本了。本了。2）在家人的帮助下，她最终回到了学校。）在家人的帮助下，她最终回到了学校。3）我们可以靠一副好地图旅游。）我们可以靠一副好地图旅游。4）她在邻居的帮助下把火扑灭了。）她在邻居的帮助下把火扑灭了。5)我们用词语来表达思想。我们用词语来表达思想。【点拨点拨】1）Now we can reduce the production costs with the help

12、 of the computer.2）He could finally go back to school with the help of his family.3）We may travel with the aid of a good map.4）With the aid of a neighbour,she managed to put out the fire.5）We express our thought by means of words.5.This means that it should clean the house,mop the floors,cook the di

13、nner and deal with telephone calls.这这意味着它能清理房意味着它能清理房间间，拖地板，做，拖地板，做饭饭，和，和处处理接收理接收电话电话等事等事务务。【观观察思考察思考】1)Many colleges have taken measures to deal with the cheating of students in exams.许许多大学已采取措施多大学已采取措施应应对对学生考学生考试试作弊作弊问题问题。2)I have a lot of things to deal with.我有我有许许多事情要去多事情要去处处理。理。3)What are we go

14、ing to do with the problem?我我们们怎怎样处样处理理这这个个问题问题？【归纳总结归纳总结】1.deal with _2.do with_特殊疑特殊疑问问句中，句中，deal with 用用_ 提提问问，而，而 do with 用用_提提问问【点拨点拨】1.处理；处理；安排安排2.对付对付;处理；利用处理；利用 how;what【尝试运用尝试运用】完成句子完成句子1)Firstly,let us _the most important issue.首先让我们来处理最紧要首先让我们来处理最紧要的问题。的问题。2)What will you _the green gas?你

15、们用这绿色气体干什么？你们用这绿色气体干什么？3)I dont know _ to deal with the problem at present.目前，我不知道如何目前，我不知道如何处理这个问题。处理这个问题。4)Last summer he told us _ to dealt with poisonous gas.去年暑假他教我们怎样去年暑假他教我们怎样应对毒气。应对毒气。5)_ did they do with the problem arising at the meting?他们怎样处理会议上他们怎样处理会议上出现的问题？出现的问题？【点拨点拨】1)deal with）2)do

16、with 3)how 4)how 5)WhatSentence Structures:1.I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.我我发发育育缓缓慢，差不多到了两百多年以后，慢，差不多到了两百多年以后，查查尔尔斯斯.巴比奇才把我制成了一台分析机。巴比奇才把我制成了一台分析机。【观观察思考察思考】1)We had walked 10 miles before we saw a village

17、.我我们们走了走了10英里才看英里才看见见一个村庄。一个村庄。2)I didnt begin work until he had gone.直到他直到他离开我才开始工作。离开我才开始工作。【归纳总结归纳总结】1.before 在此句是在此句是_ 2.not.until._【点拨点拨】1.连词连词 表示表示_ 在在.之前才之前才 ；.就就.2.直到直到.才；在才；在.之前（不）之前（不）【尝试尝试运用运用】把下列句子翻把下列句子翻译译成成汉语汉语。1)John waited at the bus-stop for nearly half an hour before the bus finall

18、y arrived.2)He was told that it would be at least three more months before he could recover and return to work.3）My uncle didnt get married until he was forty-five.4）I didnt wake up until I heard the alarm clock.【点拨点拨】1)约翰在车站等了几乎半小时汽车才来。约翰在车站等了几乎半小时汽车才来。2）他被告知至少还有三个月他才能恢复并去工作。他被告知至少还有三个月他才能恢复并去工作。3）

19、我叔叔直到）我叔叔直到45才结婚。才结婚。4）直到听到闹钟的铃声我才醒来。）直到听到闹钟的铃声我才醒来。2.And my memory become so large that even I couldnt believe it!我我的的存存储储容容量量变变的的如如此此之之大大，连连我我自自己己也也不不能能相信！相信！【观观察思考察思考】1）The river is so seriously polluted that we must take action at once.河流河流污污染如此染如此严严重重,我我们们必必须马须马上采取行上采取行动动。2）She told us such an

20、interesting story that we all forgot about the time.她她给给我我们讲们讲了如此有趣的故了如此有趣的故事，以至于我事，以至于我们们忘忘记记了了时间时间。3）He went so early that he could get a good seat他早去他早去为为的是能得到个好座位。的是能得到个好座位。【归纳总结归纳总结】1.so that 意思是意思是 _引引导导 _ so后后须须接接 _ 2.such.that.意思是意思是 _引引导导_ such 后后须须接接_可表示可表示_【点拨点拨】1.如此如此以至于以至于;结果状语从句结果状语从句,

21、形容词或副词形容词或副词 2.如此如此以至于以至于结果状语从句结果状语从句,名词为了名词为了,结果结果;状状语从句语从句；结果或目的结果或目的【尝试运用尝试运用】完成句子完成句子1)She speak English _ good that she can talk with foreigners in it now.2)She was _ happy that she danced3)The new story is written in _ easy English that even beginners can understand.4)He went early _ he got a good seat5)He hurried up _ he could catch the train.【点点拨拨】1.so 2.so 3.such 4.so that 5.so that