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2021版英语全能大一轮复习人教版课件:必修2 UNIT 3 COMPUTERS .ppt

1、内容索引讲 核心考点全突破练 检测提能全过关话题语篇专攻练第一板块 重点单词1.calculate vt.计算【高考佳句】(2019全国卷)However,biologists calculate that there are about 20,00025,000 polar bears worldwide.然而,生物学家计算,全世界大约有20 00025 000只北极熊。(1)be calculated to do sth.打算或计划做某事It is calculated that.据估算(2)calculationn.计算,推算calculatorn.计算器【即时训练】用calculate

2、的适当形式填空My _is based on actual figures.We have to use a _to _the horsepower needed to propel the ship._when its population reached its highest point,there were more than 3 billion passenger pigeons.据估算,当旅鸽的数量达到最多时,会有30多亿只。calculationcalculatorcalculateIt was calculated that2.goal n.目标;目的;球门;(进球)得分【高考

3、佳句】(2019全国卷)When I studied chemistry in high school,I reconsidered my goal and decided to be a doctor.当我在高中学化学的时候,我重新考虑了我的目标并且决定成为一名医生。set goals/a goal确定目标achieve/realize ones goal实现某人的目标reach ones goal达到某人的目标score a goal进球得分【即时训练】完成句子They hope _by peaceful means.他们希望用和平手段达到他们的目的。The crowd were exci

4、ted when the home team _.当主队踢进一球时,观众都很兴奋。to achieve their goalscored a goal3.arise vi.(arose,arisen)出现;发生【高考佳句】(2019全国卷)While I have only listed two of each,there are obviously many other situations that can arise.虽然我只列出了每种情况中的两种,但显然还有许多其他情况可能发生。(1)arise作“呈现;出现;发生”之意时,主语多为抽象名词argument/problem/quarre

5、l/question/movement等,多指不好的事情发生。(2)arise from/out of.由而引起;由而产生;从中产生。【即时训练】写出黑体部分的含义Seeing his mother return home,the boy arose from his chair immediately.()They arose at sunrise to get an early start to the park.()It cant be too careful while driving.Accidents often arise from carelessness.()起身起床出现,发

6、生课间休息时,我们的班主任开始处理课上出现的问题。(一句多译)At break,our head teacher got down to dealing with the matter _.(分词作定语)At break,our head teacher got down to dealing with the matter _.(定语从句)arising fromhis classwhich arosefrom his class【易混辨析】原形词性、词义过去式过去分词现在分词arise(vi.)出现,发生,起因于arosearisenarisingrise(vi.)升起,起立,增长,上升r

7、oserisenrisingraise(vt.)举起,提高,饲养,养育,筹集,招募raisedraisedraisingarouse(vt.)唤醒,激起arousedarousedarousing第二板块 常考短语句式4.as a result 结果【高考佳句】(2019江苏高考)As a result,humans can perform very complex tasks with their hands.因此,人类可以用手执行非常复杂的任务。as a result of因为;由于;作为的结果result from是由造成的result in导致;造成【即时训练】完成句子_,many s

8、pecies are quickly dying out.结果,许多物种正迅速地灭绝。We should not mistakenly believe that we always behave _some inner disposition.我们不应该错误地认为我们的行为总是某种内在的性格的结果。As a resultas a result ofHis failure _not working hard enough.他的失败是工作不够努力造成的。His laziness _his failure.他的懒惰导致了他的失败。resulted fromresulted in5.deal with

9、 处理;安排;对付【高考佳句】(2019北京高考)We need to deal with the insecure nature of our telecom networks.我们需要处理我们电信网络的不安全性。do with sth.处理某事make a deal达成协议;做成交易Its a deal.成交;一言为定。【即时训练】写出黑体部分的含义As a child,he never left his parents,so he didnt get used to dealing witheverything in school independently.()His article

10、deals with many issues we are greatly concerned about.()His work experience equipped him to deal with all kinds of people.()处理;应付论及;涉及与打交道我不知道他们将如何处理这个问题。(一句多译)I dont know how they will _the problem.I dont know what they will _the problem.deal withdo with【误区点拨】deal with中的deal为不及物动词,常与疑问词how连用,表示“怎么处

11、理/对待”;do with中的do为及物动词,常与疑问词what连用,表示“怎么处理/对待”。6.I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.我发育缓慢,差不多到了两百年之后,查尔斯巴比奇才把我制成了一台分析机。(1)该句使用了“It took+一段时间+before+从句(一般过去时)”句型,表示“过了一段时间后才”。该句型中主句谓语动词也可使用be动词。(2)It+will(not)be+

12、时间段+before+从句(现在时)要过一段时间后才(用不了一段时间就)(3)It+was(not)+时间段+before+从句(过去时)过了一段时间后才(没过一段时间就)【即时训练】写出下列句中before的含义It may be many years before the situation improves.()It wasnt long before he came back.()Lock your bike before it gets stolen.()It was a long time before I got to sleep again.()Youd better writ

13、e down her phone number before you forget it.()在之前不久就以免才趁We need to get to the root of the problem _.我们需要找出问题的根源才能解决问题。before we can solve it7.Over time my memory has developed so much that,like an elephant,I never forget anything I have been told!随着时间的推移,我的记忆能力发展得如此之快,就像一头大象一样,我从来不会忘记告诉过我的任何事情!【即时训

14、练】同义句改写It was such a cold day that there was nobody in the street.(用so.that.改写)It was _there was nobody in the street.I was so excited that I couldnt wait to try my hands at riding the bicycle.(用so.that.改写为倒装)_I couldnt wait to try my hands at riding the bicycle.so cold a day thatSo excited was I th

15、atHe spoke so loudly that even the people in the next room could hear him.(用such.that.改写句子)He spoke in _even the people in the next room could hear him.such a loud voice that【要点拾遗】personal adj.个人的;私人的;亲自的personallyadv.亲自,就个人而言personalityn.性格,个性,人格personn.人,个人【即时训练】用person的适当形式填空Protecting the environment is not only a _concern but also a public one._,Im tired of watching TV.I prefer to go out for a walk.She has a powerful _.After the president made an official announcement,she expressed her _opinion._speaking,I agree with what she said.personalPersonallypersonalitypersonalPersonally

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