unit3reading必修2.ppt

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1、ComputersReading Comprehension1.During many years,there have been many changes on me.长句分析法v断意群：主主从从分分小小v主从句：主从句：When,that,which,how,whatv分词：不定式，现在分词，过去分词：不定式，现在分词，过去分词分词v小词：介词，连词小词：介词，连词2.I was changed into an analytical machine which was invented by Charles Babbage after two hundred years.v3.Throug

2、h using cards with holes,an operator designed programs for me.vSince then,I changed quickly both in size and in brainpower.vI always felt very lonely because I was standing there on my own.v Since the 1970s,I have been applied in many fields.Language pointsv1.have in commonvCalculate:to find out how

3、 much something will cost,how long something will take.vCalculating:vCalculation:vCalculate on:universal 一致的；普通的，一般的；通用的，万能的vEg 关于性教育问题，大家的意见是一致的vThere was universal agreement on the issue of sex education.vEg 人人都感兴趣的话题va topic of universal interestvEg 举世公认的真理 va universal truthvUniversity3.I develo

4、ped very slowly and it took nearly two hundred years before I was built as an analytical machine by Charle Babbage.v我发展很慢，差不多到了两百年之后，查尔斯巴比奇才将我制成了一台分析机。v该句使用了“It took+一段时间+before+从句(一般过去时)”句型，表示“过了一段时间才”。该句型中主句谓语动词多使用be 动词。v1)It will be+时间段时间段+before+从句从句(现在时现在时)v要过一段时间后才要过一段时间后才v2)It will not be+时间段

5、时间段+before+从句从句(现在时现在时)v用不了一段时间就用不了一段时间就v3)It was+时间段时间段+before+从句从句(过过去时去时)v过了一段时间后才过了一段时间后才v4)It was not+时间段时间段+before+从句从句(过去时过去时)v 没过一段时间就没过一段时间就 若主句为将来时态，从句则用一般现在时态；若主句是一般过去时态或过去完成时态，则从句用一般过去时态。veg:我们花了几个月的时间才解决了公司的财务问题。vIt took months before we solved the financial problem of our company.veg:还

6、有两年半你们才从这所学校毕业。vIt will be two and a half years before you graduate from the school.veg:很长一段时间后我才理解他所做的事情。vIt was a long time before I understood what he did.vapply:1）apply to 向什么申请veg:我申请了4所大学，全都录取我了。vI applied to four universities and was accepted by all of them.v2）apply for申请什么vEg:he applied for the post of the secretary.v他申请秘书一职。v3）apply oneselfv4)apply sth to:use sthvNew technology is being applied to almost every industrial process.新技术正被应用到几乎所有的工业流程。