選修八unit知識點

1、Unit 5 Meet ing your an cestors單元要點預覽（旨在讓同學整體了解本單元要點）詞 匯部 分詞語 辨析1. used to / would2. in terrupt / disturb / bother3. assume / suppose / presume詞形 變化1. alternativen.c替換物adj.選擇性的，二中擇一 的alter nativelyadv.作為選擇，二者擇一2. accuracy n.u精確性，正確度accurate adj.正確 的，精確的in accurate adj.不準確的accurately adv.正確地，精 確地in a

2、ccurately adv.不準確地3. assume vt.假定；設想;采用；承擔assumpti on n.假定，設想，假裝，就職assumed adj.假定的，假裝的，裝的4. an alysis n .c分析，分解an alyse(a nalyze)vt.分析，分解an alytical adj.分析的，解析的5. significaneen.意義，含義；重要性，重大sig ni fica nt adj.相當數(shù)量的；意義重大 的significantly adv.意義深遠地，重大地6. divisionn.分（開，配，擔；歧，裂）；除（法）；部門divide vt.分(開)；vi.分開

3、7. skill n.c,u技能，技巧，熟練，巧妙skillful adj.靈巧的，熟練的，制作精 巧的skillfully adv.巧妙地，技術好地重點 單詞1. i nterrupt vt.& vi.阻斷，中斷；打岔；插嘴2. applaud vt.鼓掌，稱贊，贊成3. accelerate vt.加速，促進4. arrest vt.逮捕，拘留，吸引（注意）n.c逮捕重點 詞組1. regardless of不管；不顧2. fed up with受夠了，厭煩3. look ahead向前看；為將來謀劃4. date back to.追溯到. ，從.時候就有了重點句型1. Wehav

4、e been excavating layers of ash almost six metres thick, which suggests thatthey might have kept the fire burning all win ter.2. Our evide nee suggests they did in deed wear clothes made form ani mal sk in s.重點語法復習現(xiàn)在進行時（見語法部分）語言要點（模塊）I詞語辨析（旨在提供完形填空所需材料）1. used to / would【解釋】would與used to都可用來表示過去經(jīng)常性或

5、習慣性的動作。would只能表示反復發(fā)生的動作。如果表示過去經(jīng)常性的狀態(tài)，就不能用would，只能用used to。used to表示過去經(jīng)常性或習慣性的動作或狀態(tài)，但現(xiàn)在已經(jīng)結束。would則表示有可能再發(fā)生?！揪毩暋坑胾sed to或would填空。1) . Whe n we were boys we_ go swimmi ng every summer.2) . He_be very poor.3) . People_ believe that the earth was flat.4) . He_go to the park as soon as he was free.Keys: 1

6、). used to / would 2). used to 3). used to 4). would (現(xiàn)在有可能再去)2. in terrupt / disturb / bother【解釋】in terrupt意為打斷，中斷，尤指中斷某活動的連續(xù)性。disturb意為“因焦慮、失望、困惑等情感因素而使人心緒收到明顯干擾”。bother意為“擾亂某人心緒而使人不能專心或專一”。【練習】選擇interrupt，disturb，bother的正確形式填空。1) . She was_to hear of your ill ness.2) . Im sorry to _the meeti ng,

7、but there is an urge nt Ion g-dista neecallfor Mr. Zhou.3) . Don t _yourself too much about me.4) . We_ in the middle of our con versati on.Keys: 1). disturbed 2). i nterrupt 3). bother 4). were in terrupted3. assume / suppose / presume【解釋】assume“假定，設想”，用于邏輯推理，強調(diào)一種缺乏證據(jù)的結論，以檢驗某種建議。suppose意為“根據(jù)一定證據(jù)作出的

8、見解”，最不正式。presume意為“某人以過去的經(jīng)驗作為依據(jù)，對某事作出合乎邏輯的推測”?！揪毩暋窟x擇assume，suppose，presume的正確形式填空。1) . I_ that he has gone for a walk.2) . We_ the situatio n will improve.3) . From the available data it may be_that the writer was very famous inthe 4thcentury.Keys: 1). assume 2). suppose 3). presumedn.詞性變化（旨在提供語法填空所

9、需材料）1. alternative n.c替換物adj.選擇性的，二中擇一的alter nativelyadv.作為選擇，二者擇一2. accuracy n.u精確性，正確度accurate adj.正確的，精確的in accurate adj.不準確的accurately adv.正確地，精 確地inaccurately adv.不準確地3. assume vt.假定；設想；assumption n.假定，設想，assumed adj.假定的，假裝采用；承擔假裝，就職的，裝的4. an alysis n .c分析，分解an alyse(a nalyze) vt.分析，分解an alytic

10、al adj.分析的，解析的5. sig ni fica nee n.意義，含義；重要性，重大sig ni fica nt adj.相當數(shù)量的；意義重大的sig ni fica ntly adv.意義深遠地，重大地6. divisio n n.分（開，配，擔；歧，裂）；除（法）；部 門divide vt.分（開）；vi.分開7. skill n.c,u技能，技巧，熟練，巧妙skillful adj.靈巧的，熟練的，制作精巧的skillfully adv.巧妙地，技術好地【練習】用括號內(nèi)所提供詞的適當形式或介詞填空。1). The way was blocked, so we went by a

11、n(alter natively) road.2). The desig n is slightly(accurate), so we must make some cha nges.3). The boss is worried about the(accurate) of the statistics.4).Its impossible to predict the weather(accurate).5). A lot of people make the(assume) that poverty only exists in theThird World.6). The(analyse

12、) of thesamples on the murder spot showed some valuableclues to the police the address.7). Stude nts n eed to possess certa in basic(skillful) by the time theyfinish schoo1.8). He was valued for his skill(介詞)raising money for the company.9). The discovery of the new drug is of great(sig ni fica nt)

13、to peoplesufferi ng from heart problems.10). Sometimes there is no simple(divide) betwee ngood and evil.Keys: 1). alter native 2). i naccurate 3). accuracy 4). accurately5).assumpti on6). an alysis 7). skills8). i n9). sig nificance 10).divisio n川.重點詞匯(旨在提供詞匯綜合運用所需材料)1. i nterrupt vt.&vi.阻斷，中斷；打

14、岔；插嘴in terruptio n n.中斷，打斷典例1) . Traffic in the city was in terrupted by a sno wstorm.市內(nèi)交通被暴風雪所阻斷。2) . It is rude to in terrupt.打斷別人的話，是不禮貌的。重點用法in terrupt (sb/sth) (with sth)打斷(某人)講話；打岔；打擾練習用interrupt的正確形式填空。1) . Electricity_(in terrupt) in the course of work.2) . Lets go somewhere where we can tal

15、k without_ (interrupt).Keys: 1). was in terrupted 2). i nterrupti on2. applaud vt.鼓掌，稱贊，贊成applause n.鼓掌歡迎，歡呼典例1). Everyone即plauded whe n the play en ded.演出結束時，大家都熱烈鼓掌。2). I applaud your decisi on.我贊成你的決疋。重點用法applaud the decisi on贊成某applaud sb. for sth個決定因某事而贊揚某人3. accelerate vt.&vi.力口速，促進acceler

16、ati on n.加速度典例1) . We must take measures to accelerate the rate of econo mic growth.我們必須采取措施，加速經(jīng)濟增長。2) . The car accelerated as it overtook me.那輛汽車一加速就超越了我。練習用accelerate或其同根詞的適當形式填空。1) . The driver stepped on the gas and_the car.2) . The_of train service will bring us great convenience.3) . The bad

17、weather_ our departure.Keys: 1). accelerated 2). accelerati on 3). accelerated4. arrest vt.逮捕，拘留，吸引(注意)n.c逮捕典例1) . The crim inal was arrested yesterday.2) . What she did arrested my atte nti on.重點用法be arrested for sth.因某事而被捕un der arrest被捕；被拘留IV.重點詞組(旨在提供綜合運用所需材料)1. regardless of不管；不顧典例1) . Ill take

18、 the job regardless of the pay.不管報酬多少我都要這份工作。2) . He says what he thinks, regardless of other peoples feelings.他怎么想就怎么說，不考慮別人的情緒。罪犯昨天被捕了。她所做的吸引了我的注意力。arrest ones attention吸引某人的注意2. fed up with受夠了，厭煩典例1) . Im fed up with wait ing for her to teleph one.2) . What s the matter? You look pretty fed up.我等

19、她的電話都等得不耐煩了。怎麼啦？你顯得那麼不高興。短語歸納feed短語：feed sb/sth on sth給（人或動物）食物；喂；飼養(yǎng)feed on食feed sth to sb/sth給（人或動物）某物作為食物練習根據(jù)句子的要求在括號里填入適當?shù)慕樵~。（動物）以為主1). Several childre n were feedi ng bread_the ducks.2). What do you feed your dog_?3). Cows feed_grass.4). Im fed up_ the same breakfast every morning.Keys: 1). to 2

20、). on 3). on 4). with3. look ahead向前看；為將來謀劃典例Have you looked ahead to what you五年後你要做些什麼？ll be doing in five yearstime?你是否想過短語歸納look短語：look back向后看；回顧look up查找；形勢好轉；看望 細查閱look forward to sth./d oing sth.look out留神；注意look up tosb.尊敬 某人盼望look on旁觀；看作look into調(diào)查lookthrough仔l(wèi)ook over快速瀏覽，復習look dow n (on

21、/upon sth.)4. date back to. = date from.追溯到.，從.時候開始就有了典例The church dates back to the 13th cen tury.這座教堂從十三世紀開始就有了。練習根據(jù)句子的要求在括號里填入短語或所給詞的適當形式。1) . The custom_ hun dreds of years.2) . Our friendship_ the late 70s.3) . This is a law_(date) from the 17th cen tury.Keys: 1). dates back 2). dates back to 3

22、). dati ngV.重點句子(旨在提供句子結構等所需材料)1. We have bee n excavati ng layers of ash almost six metres thick, which suggeststhat they might have kept the fire burning all win ter.我們一直在挖掘一層層的積灰，幾乎有六米厚，這說明他們可能整個冬季都在燒火。解釋“have been excavating”是現(xiàn)在完成進行時，表示從過去開始一直延續(xù)到現(xiàn)在，或 將繼續(xù)延續(xù)至將來。女口：We have been working on this project for over a month now.至U目前為止，我們一直在處理那個項目，已經(jīng)花了一個多月時間了。注意：區(qū)別現(xiàn)在完成時和現(xiàn)在完成進行時的區(qū)別。一般來說現(xiàn)在完成時表示已經(jīng)完成，而現(xiàn)在完成進行時表示還沒完成還要延續(xù)下去或者剛剛完成。試比較：They have built a house.(完成) / They have been building a house.(尚未完成)2. Our evide n