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知识探索◆词汇学习A。
重点单词1。
tentative观察示例adj。
.。
，then try a tentative guess about what Peking Man might have done and used thousands of years ago。
We have made a tentative arrangement to meet next month.I can only give a tentative opinion。
The shy girl gave us a tentative smile.归纳拓展tentative 其意义为“暂定的，犹豫的”,在句中可作前置定语或表语.即时练习单项填空(1) Our vacation plans are still _____.We don’t know where to go.A.attentiveB.attendC。
tentative D。
tent（2) We have made a _______ offer—we shall make it clear as soon as possible。
A.sure B。
certainC。
clear D.tentative(1）答案：C（2）答案：D完成句子（1）His attempts to walk are still_______（犹豫不决）。
(2）We made a _______ ______（初步结论)。
This plan will be further discussed。
(1)答案：tentative（2)答案：tentative conclusion句型转换(1)We hesitated about what we will do next。
What we will do next_______ _______ .（2）When she saw me，she gave me a forced smile.______me,she gave me a______ smile。
Unit 5Meeting your ancestors———————————◄基础盘点·自测自评►———————————重点词汇阅读单词快速排查本单元阅读词汇并在不认识的词汇前划√□beast n.□quilt n．□onion n.□skateboard n.□yogurt n.□melon n.□wrinkle n．□spear n．□eyebrow n．□arrowhead n．□excavate v t.□craftsmanship n．□hammer n．□tentative adj.□ample adj.□scratch n．& v t.□dizzy adj.□primitive adj.□howl v t.& v i.& n．□worship v t.& v i.& n.核心单词1.spit v t.吐出(唾液、食物等)v i.吐痰2.alternative n．可能的选择adj.供选择的；其他的3.regardless ad v.不管；不顾4.somehow ad v.以……方式；不知怎么地5.pulse v i.强烈而有规律地跳动；搏动n．脉搏；节拍6.category n．种类；类别；范畴7.arrest v t.逮捕；吸引n．逮捕；拘留8.kindergarten n．幼儿园9.acute adj.有观察力的；敏锐的；严重的；深刻的10.album n．相册；集邮册；唱片11.delete v t.删；删除拓展单词1.identify v t.确认；识别；鉴别→identification n．辨认；鉴定2.starvation n．挨饿；饿死→starve v i.挨饿；饿死3.accuracy n．精确；准确→accurate adj.精确的→inaccurate adj.不准确的4.interrupt v t.& v i.打断……讲话；打岔；暂时中断或中止→interruption n．中断；干扰5.sharpen v i.& v t. (使)锋利；尖锐；清晰→sharpener n．磨具；削具→sharp adj.锋利的6.analysis n. (pl. analyses)分析→analyse v t.分析→analyst n．分析者；化验员(拓展速记1)7.significance n．意义；意思；重要性；重要意义→significant adj.重大的；意义重大的8.systematic adj.有系统的；有计划的；有条理的→system n．系统9.division n．分割；划分；分配；分界线→divide v．分割；划分；分配10.applaud v i.& v t.鼓掌欢迎；赞赏→applause n．鼓掌欢迎；欢呼11.skilful adj.有技巧的；熟练的→skill n．技能；技巧→skilled adj.有技巧的；熟练的(拓展速记2)[语境活用]用所给词的适当形式填空1.The pencil was not sharp, so he sharpened it with a sharpener. (sharpen)2.In the final analysis, I think we must try to analyse the causes of his many shallow and wrong analyses that he showed to the pupils. (analysis)3.To be a skilled worker, you need to acquire some basic skills. (skill)4.She used to suffer from starvation but now she is starving herself to try to lose weight. (starve)5.At the meeting, Tom interrupted Jane with a question, but Jane carried on, totally ignoring his interruption. (interrupt)6.His family's wealth is divided into four parts, but they don't think the division is fair. (divide)7.In the past 30 years, the economy of China has developed significantly, which is of great significance to the world economy. (significant)8.While working out the problem, you should pay more attention to the accuracy. You must measure the length accurately in order to get the accurate number. (accurate)走进高考1.assume 熟义：v t.假定(设)；设想；认为生义：v.装出；假装He assumed an air of concern.2.sharpen 熟义：v i.& v t. (使)锋利；尖锐；清晰生义：v．变得清晰The outline of the trees sharpened as it grew lighter.高频短语1.show...round带……参观2.regardless of不管；不顾3.keep out of阻止……进入；(使)留在外面4.at most至多；最多5.cut up切碎；伤心的6.be aware of意识到7.fed up with受够了；饱受；厌烦8.look ahead向前看；为将来打算9.with relief欣慰地；如释重负地10.date back (to...)追溯到……；始于……(拓展速记3)[语境活用]用左栏短语的适当形式填空1.The little boy is required to play computer games for at most 2 hours a day.2.Whenever we are in trouble, we must look ahead and encourage ourselves.3.My mother would always cut up meat for our dog.4.I didn't come to Spain for my holidays to keep out of the sun, just in contrary, in fact.5.Children are fed up with their studies because they are expected to do far better than they can.6.The history of this country can date back to the Stone Age.7.He continued speaking, regardless of my feelings about the matter.重点句式1.might have done 表示对发生事情的可能性推测[原句]We have been excavating layers of ash almost six metres thick, which suggests that they might have kept the fire burning all winter.我们一直在挖掘一层层的积灰，几乎有六米厚，这说明他们可能整个冬季都在烧火。
Book 8 Unit 5 Meeting your ancestorsWords and expressions1.△identify vt. 确认；识别；鉴别Police have already identified 10 murder suspects.警方已经确认了10名谋杀嫌疑犯。
2.alternative n. 可能的选择; adj. 供选择的；其他的We have the alternative plans of having a picnic or taking a boat trip.我们在去野餐或者去乘船旅游两个计划中只能选一。
They are provided with the choice of two alternative flights.有两个航班可供他们选择。
3.△archaeology n. 考古学(<美>archeology)He displayed interest in archaeology.他对考古学有兴趣。
She teaches archaeology at the university.她在大学里教考古学。
4.△archaeological adj. 考古学的；与考古学有关的(<美>archeological)Today it is one of the most remarkable archaeological sites to be found in Egypt.今天，这是在埃及发现的最令人叹为观止的考古学上的遗址之一。
5.△archaeologist n. 考古学家(<美>archeologist)One of the girls had a father who is an archaeologist.有一个学生的父亲就是一位考古学家。
The archaeologist has to get special permission to open up the grave.这位考古学家要得到特别许可才能打开坟墓。
2020年高考英语一轮复习：选修八Unit 5 Meeting your ancestors[单词回顾·会拓展]Ⅰ.核心词汇(能写会用)1.somehow相关单词一览①somehow ad v.以……方式；不知怎么地；不知为什么②anyhow ad v.无论如何③anyway ad v.无论如何；不管怎样④somewhat ad v.有点儿；有几分；颇为2．分词用作介词或连词小结①assuming 假设；假定②considering 鉴于；考虑到③including 包含；包括④supposing 假设；假如⑤provided/providing 假设；如果⑥concerning 关于⑦given 鉴于；考虑到3．后缀en构成的动词集锦①sharp→sharpen 磨快；使敏捷1．tentative adj .试探性的；不确定的 2．ample adj .足够的；充足的；富裕的 3．primitive adj .原始的；远古的；简陋的 4．category n ．种类；类别；范畴 5．receptionistn ．接待员；招待员 6．yogurt n ．酸乳酪；酸奶 7．wrinkle n ．皱纹8．pulse v i .强烈而有规律地跳动；搏动 n ．脉搏；节拍 9．howl v t .& v i .嗥叫；叫喊；吼叫 n ．长嚎；嗥叫 语境串联Mr.Brown ，an acute politician ，gave a significant speech that a lot of poor people have no alternative but to starve to death and regardless of others ，rich people should help improve their messy living conditions.He was interrupted by the audience applauding from time to time.Assuming that if all of us do such things in a systematic way ，we 'll accelerate the development of society.[短语再现·能应用]college student！”However，looking ahead，he has no alternative but to prepare for the coming College Entrance Examinations.Fed up with doing lots of exercises every day regardless of a lot of difficulties，he knows he has to accelerate his walk to revision.His parents both applaud him and are proud of him.[句型重温·巧仿写]教材情景导入01语法填空A group of students from England has come to theZhoukoudian caves for a visit.An archaeologist 1.is showing(show) them round.The archaeologists 2.have been excavating(excavate) here for many years.After finding human and animal bones 3.in those caves higher up the hill as well as tools and other objects assume discovered fireplaces in the centre of the caves 5.where they constructed fires.Some evidence suggests 6.that our ancestors did wear clothes 7.made (make) from animal skins.The archaeologist also shows the students a primitive necklace 8.preserved (preserve) quite well.Indeed analysis has been 9.specially(special) showing us fields around here used to be part of a large shallow假定/假设某人/某事为……assume that... 假定/假设……It is assumed that... ……被认为(2)assumption n. 假定；假设make an assumption 认为；假定on the assumption that 假定(3)assuming (that)．.. 假设/假定……①Don't assume it is OK to be rude if the person you're in touch with won't recognize you. 不要主观地认为如果你正在接触的人认不出来你，你就可以粗鲁。
高考英语要点梳理重点突破选修8 Unit 5 Meeting your ancestors（含自测习题及答案解析）要点梳理高效梳理·知识备考●重点单词1．alternative n. 可能的选择adj.供选择的；其他的2．starvation n．挨饿；饿死→starve vi.挨饿；饿死3．accuracy n．精确；准确→accurate adj.准确的；精确的4．interrupt vt. & vi.打断……讲话；打岔；暂时中断或中止5．assume vt.假定；设想6．sharpen vi. & vt.(使)锋利；尖锐；清晰→sharpener n．磨具；削具7．messy adj.凌乱的；脏的→mess n．凌乱，脏8．botany n．植物学→botanical adj.植物学的，与植物学有关的9．analysis n．分析→analyses pl.→analyse vt.分析→analyst n．分析者，化验员→analytic(al) adj.分析的，解析的10．category n．种类；类别；范畴11．significance n．意义；意思；重要性，重要意义12．delete vt.删；删除13．somehow adv.以……方式；不知怎么地14．academy n．学院；学会；学术团体；院校15．applaud vi. & vt.鼓掌欢迎；赞赏→applause n．鼓掌16．accelerate vi. & vt.加速；促进17．arrest vt.逮捕；吸引n．逮捕；拘留18．dizzy adj.晕眩的；昏乱的；使人发晕或困惑的●重点短语1．regardless of不管；不顾2．at most 至多；最多3．cut up切碎4．fed up with 受够了；饱受；厌烦5．look ahead向前看；为将来打算6．date back追溯到……7．arrest sb. for... 因……而逮捕某人8．with relief 欣慰地9．be proud of... 以……为骄傲10．turn to sb. for help 向某人求助●重点句型1．If only it could be just like last year! 要是能跟去年那样有多好呀！2．It is a great pleasure to meet you students from England... 见到你们这些来自英国的学生非常高兴……3．It must have been very uncomfortable.那肯定会非常不舒服。
英语选修8unit5重点单词Unit51. identify vt. ~ sb. /sth. as sb./ sth.确认，证明某人/某物系某人/某物她认出那个男子就是袭击她的人。
The police are trying to identify the dead body.Scientists have identified the gene that causes abnormal growth.identification n. 鉴别；身份证明identification card 身份证identity n. 身份；特征identical adj. 完全相同的，一样的2. alternative adj. (作定语) 供选择的，可代替的We recommend using alternative sources of fuel such as charcoal(木炭).>As there is less and less coal and oil, scientists are exploring new ways of making use of alternative energy, such as sunlight, wind and water for power and fuel.n. 可能的选择；替代物Minibuses with seats for 12 passengers offer an alternative to expensive taxis and crowded public transport.I’m sorry, there’s no alternative but to sell the car.别无选择只好做……have no alternative but to do= have no choice but to do = have nothing to do but do除了放弃那个计划，我别无选择I have no alternative but to give up the plan.= I have no choice but to give up the plan.= I have nothing to do but give up the plan.3. Review the words: starve; accurate@1)They got lost in the desert and _______(starve) to death.2) She is starving _______ trying to lose weight.3) By the year 2025, no one will die of ___________(starve) because there will be food for everyone.4) He is getting back this afternoon, to be ______(accurate), at four o’clock.5) It’s impossible to predict the weather ___________(accurate).6) __________(accurate) is most important in translation.4. Interrupt①vt. vi.打断(讲话或讲话人),打扰I wish you wouldn’t interrupt me all the time.Sorry to interrupt you, but I have something urgent to tell you.！②vt. 使…暂时停止；中断The war interrupted the trade between the two countries.My studies were interrupted by the Cultural Revolution.Will you stop ____________(interrupt) me when I’m talkingHe burst into the room, ___________ my teaching.5. acute adj.①敏锐的;聪明的，机敏的Dogs have an acute sense of smell.His hearing is so ______ that he can even hear a pin drop.②剧烈的；强烈的acute pain acute embarrassmentThere is an acute shortage of water and food.、③急性的SARS stands for severe acute respiratory syndrome.acute pneumonia 急性肺炎6. assume vt. 假定; (想当然地)认为I didn’t see your car, so I assumed you’d gone out.I assumed she was American but she was actually Canadian.Let’s just assume the statement to be true.It’s generally assumed that stress is caused by too much work.assuming分词可以充当连词使用=supposing 或suppose 意为“假如；假设”Assuming it rains tomorrow, what shall we do Assuming we have won a lottery, how shall we use the money —We reserved a big table on the assumption that fifteen people would come.We can’t just make an assumption but must get the accurate evidence.The assumed enemy sometimes will disturb your life.7. regardless of 不管；不顾We strongly advocate equal treatment for all, regardless of race, religion, or sex.All our proposals were rejected regardless of their merits.This special school accepts all disabled students, ___ educational level and background. A. according to B. regardless of C. in addition terms ofJoe is a good basketball player ________ being short and fat.__________ ups and downs, she never takes her fate lying down.8. Review “at (the) most; at least”You could buy a good washing machine for about $350, $400 ______(至多).！________________(最高) the temperature in summer goes up to about 38℃.It will take you _________ (至少) 20 minutes to get there.He had been dead for _________(至少) a fortnight.It would cost $1 million _______________ (最起码).9. 用合适的副词或介词填空：1) The gas has been cut ______ due to the quake.2) You have to cut _____ on the time surfing the internet.3) Davis cut _____ to ask if anyone would like a drink.4) You can cut _____ the last sentence of the paragraph.5) I feel very cut _____ if I didn’t know what was happening in the world.6) Cut _____ the meat and carrots and then mix them.10.用括号内单词的适当形式补充句子。
Unit51. identify vt. ~ sb. /sth. as sb./ sth. 确认，证明某人/某物系某人/某物她认出那个男子就是袭击她的人。
The police are trying to identify the dead body.Scientists have identified the gene that causes abnormal growth. identification n. 鉴别；身份证明identification card 身份证identity n. 身份；特征identical adj. 完全相同的，一样的2. alternative adj. （作定语）供选择的，可代替的We recommend using alternative sources of fuel such as charcoal（木炭）.As there is less and less coal and oil, scientists are exploring new ways of making use of alternative energy, such as sunlight, wind and water for power and fuel.n. 可能的选择；替代物Minibuses with seats for 12 passengers offer an alternative to expensivetaxis and crowded public transport.I'm sorry, there 'sno alternative but to sell the car.另»无选择只好做 . have no alter native but to do= have no choice but to do = have nothing to do but do除了放弃那个计划，我另无选择I have no alternative but to give up the plan.= I have no choice but to give up the plan. = I have nothing to do but give up the plan.3. Review the words: starve; accurate1) _______________________________ T hey got lost in the desert and (starve) to death.2) She is starving ______ trying to lose weight.3) By the year 2025, no one will die of __________ (starve) because therewill be food for everyone.4) He is getting back this afternoon, to be _____ (accurate), at four o'clock.5) It 's impossible to predict the weather ________ (accurate).6) ________ (accurate) is most important in translation.4. Interrupt①vt. vi.打断(讲话或讲话人)，打扰I wish you wouldn 't interrupt me all the time.Sorry to interrupt you, but I have something urgent to tell you.②vt.使…暂时停止；中断The war interrupted the trade between the two countries.My studies were interrupted by the Cultural Revolution.Will you stop ___________ (interrupt) me when I 'm talking?He burst into the room, __________ my teaching.5. acute adj.①敏锐的; 聪明的，机敏的Dogs have an acute sense of smell.His hearing is so _____ that he can even hear a pin drop.②剧烈的；强烈的acute pain acute embarrassmentThere is an acute shortage of water and food.③急性的SARS stands for severe acute respiratory syndrome.acute pneumonia 急性肺炎6. assume vt. 假定; （想当然地）认为I didn 'tsee your car, so I assumed you 'd gone out.I assumed she was American but she was actually Canadian.Let 's just assume the statement to be true.It's generally assumed that stress is caused by too much work.assuming 分词可以充当连词使用=supposing 或suppose 意为“假如；假设”Assuming it rains tomorrow, what shall we do?Assuming we have won a lottery, how shall we use the money?We reserved a big table on the assumption that fifteen people would come.We can 't just make an assumption but must get the accurate evidence.The assumed enemy sometimes will disturb your life.7. regardless of 不管；不顾We strongly advocate equal treatment for all, regardless of race, religion, orsex. All our proposals were rejected regardless of their merits.This special school accepts all disabled students, ___ educational level and background. A. according to B. regardless of C. in addition D.in terms of Joe is a good basketball player _______ being short and fat._________ ups and downs, she never takes her fate lying down.8. Review “at （the） most; at least ”You could buy a good washing machine for about $350, $400 ____ （至多）. _______________ (最高) the temperature in summer goes up to about 38It will take you ________ ( 至少) 20 minutes to get there.He had been dead for _______ ( 至少) a fortnight.It would cost $1 million ______________ ( 最起码).9. 用合适的副词或介词填空：1) The gas has been cut ____ due to the quake.2) You have to cut ____ on the time surfing the internet.3) Davis cut ___ to ask if anyone would like a drink.4) You can cut ___ the last sentence of the paragraph.5) I feel very cut ____ if I didn 't know what was happening in the world.6) Cut ___ the meat and carrots and then mix them.10. 用括号内单词的适当形式补充句子。
I felt a ___ (sharp) pain in my back.Prices have risen _____ (sharp) over the last few months._______ (sharp) all your pencils before the test.Time is _____ (ripe) for a reform.The tomatoes quickly _____ (ripe) in the hot weather.They are trying to ___(wide) the discussion to include environmental issues.11. mess n 杂乱；混乱；vt. 弄脏；弄乱messy adj. 凌乱的；脏的The room wasbecause the thief turned it upside down.I feel I 've made ______ of things.It took me ages to get this right —I don 't want anyone to mess it __ again.It doesn 't matter if you mess it ___ , you can always try again.Sorry the place is so ______ , I haven 'thad time to clear up.12. analyse/analyze vt. 分析analysis —plur. analyses n. 分析analytical adj. 分析的；用分析方法的analyze1) __________________ People do not every problem they meet.2) _________________________ The experts are doing of the samples.3) Would you make/carry out/conduct _____ of the current situations in our country? 4) The earliest computer was called an _________ machine.13. significance n. 意义；意思；重要性significant adj. 重要的；相当数量的For a very long time, people always have been trying to find out the significance of life.The speaker gave us a talk of great __________ .In a sense, they are spending a ___________ amount of time in fruitlessefforts as they do many things at the same time.Health problems can be ____________ reduced by careful diet.14. somehow 以…方式；不知怎么莫名其妙地anyhow=anyway 无论如何；不管怎样somewhat 有点儿；有几分；稍微Somehow the right chance never seemed to present itself.I didn 'tmean to cheat, but it was still cheating anyhow.Anyway( 总之), doing what you love is wonderful.Everything seemed to be all right, yet he felt strange and somewhat uneasy.15. be fed up with … 厌倦的, 厌烦的I am really fed up with the bad weather.I got fed up with my job listening to the customers 'complaints.You look fed up —what 's the matter?He was tired ___ the urban life and hoped to move to the country, expectinga change in his current life style.He tired the audience ___ his long speeches.Andy was bored ____ listening to the same words every day.16. applaud vt.① 向... 鼓掌;向.. 喝彩The audience applauded the singer for three minutes.All people present applauded her success.②称赞;赞赏We applauded him for his courage. I applaud your decision.③vi. 鼓掌欢迎;喝彩Every one applauded whe n the play en ded.As I left the stage, there was only some quiet applause（[u] 掌声）.17. look ahead 向前看,考虑到将来We must look ahead before we make a decision.—You can expect to find a multi-storey building on this site.—Of course, I 'm looking ahead five years when I tell you this.Everyone should look ahead and save a little money each year for when he retires. Look ____ , and you 'llhave a brighter future.I've looked _____ all my papers but I still can 'tfind the article.I like to look ____ my high-school days.We should no t look dow n _______ d isabled people.The stude nts all look up __ the old teacher.Look ____ ! There ' a car coming.The police are looking ____ the records of all those involved in the crime.18. accelerate vt.& vi. 使增速，力『快The driver stepped on the gas and accelerated the car.The car sudde nly accelerated.Fertilizer will accelerate the growth of these tomato pla nts.19. arrest vt. 逮捕;拘留；吸引A man has bee n arrested and is being questi oned now.He was arrested for break ing into the bank.The title of the essay arrested my atte nti on.Any thi ng but the class can arrest your atte nti on.n. [u] 逮捕 ; [c] 逮捕的人Don 'move! You are under arrest. In win ter, the nu mber of arrests gen erally decreases.20. d ate back to ••• = date from … 追溯到......The build ing dates back to the 19th cen tury.Most of the Great Wall dates from the Ming Dy nasty.My in terest in stamp collect ing dates from my schooldays.This old traditi on dates back several cen turies to the 1600s.Our family has an an tique _______ b ack to the Tang Dyn asty.dat ing。
