選修八unit5知識點

1、Un it 5 Meet ing your an cestors單元要點預(yù)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. alternative n.c替換物adj.選擇性的，二中擇一的alter natively adv.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

2、地 in accurately adv. 不準確地3. assume vt.假定；設(shè)想;采用；承擔assumpti on n.假定，設(shè)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. significance n. 意義，含 義；重要性，重大significant adj.相當 數(shù)量的；意義重大的significantly adv.意義深遠地，重大地6. division n.分（開，配，擔； 歧，裂）；除 （法）;部門divide vt

3、.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(shù)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

4、了重點句型1. We have bee n excavat ing layers of ash almost six metres thick, which suggests that they might have kept the fire bur ning all win ter.2. Our evide nce suggests they did in deed wear clothes made form ani mal skins.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u

5、sed to都可用來表示過去經(jīng)常性或習慣性的動作。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(jié)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 wego swimmi ng every summer.2) . Hebe very poor.3) . Peoplebelieve that the earth was flat.4) . Hego to the park as soon as he was

6、free.Keys: 1). 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】interrupt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?qū)Ｒ弧??！揪毩暋窟x擇interrupt， disturb， bother的正確形式填空。1) . She wasto hear of your ill ness.2) . I ' m sor

7、ry tothe meeti ng, but there is an urge nt Ion g-dista nee call for Mr. Zhou.3) . Don' _tyourself too much about me.4) . Wein 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(shè)想”，用于邏輯推理，強調(diào)一種缺乏證據(jù)的結(jié)論，以檢驗?zāi)撤N

8、建議。 suppose意為 根據(jù)一定證據(jù)作出的見解 ”，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) . Ithat he has gone for a walk.2) . Wethe situatio n will improve.3) . From the available data it may bethat the writer was very famous in the 4 th century.Keys: 1). assume 2). suppose 3).

9、presumedn .詞性變化（旨在提供語法填空所需材料）1. alternative n.c替換物adj.選擇性的，二中擇一的alter natively adv.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 accurately adv.不準確地3. assume vt.假定；設(shè)想;采用；承擔assumpti on n.假定，設(shè)想，假裝，就職assumed adj.假定的，假裝 的，裝的4. analysis n.c分析，分解an al

10、yse(a nalyze) vt.分析，分 解an alytical adj.分析的，解析的5. significanee n. 意義，含義； 重要性，重大significant adj.相當數(shù)量的； 意義重大的significantly adv.意義深遠 地，重大地6. division 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(shù) 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 wa

11、y was blocked, so we went by an（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) . It ' s impossible to predict the weather ccurate).5) . A lot of people make the(assume) that poverty only

12、 exists in the Third World.6) . The(an alyse) of the samples on the murder spot showed some valuable clues to thepolice the address.7) . Stude nts n eed to possess certa in basic(skillful) by the time they finish schoo1.8) . He was valued for his skill( 介詞)raising money for the company.9) . The disc

13、overy of the new drug is of great(sig ni fica nt) to people sufferi ng fromheart problems.10) . Sometimes there is no simple(divide) betwee n good and evil.Keys:1). alter native2). i naccurate3). accuracy 4). accurately 5). assumpti on6). an alysis 7). skills8). i n9). sig ni fica nee10). divisi on川

14、.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；打岔；插嘴 in terruption 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

15、course of work.2) . Let' s go somewhere where we can talk without(in terrupt).Keys: 1). was in terrupted2). 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 when the play ended.演出結(jié)束時，大家都熱烈鼓掌。2) . I applaud your decisi on.我贊成你的決定。重點用法applaud sb. for sth因某事而贊揚某人applaud

16、 the decision贊成某個決定3. accelerate vt.&vi.加速，促進 acceleration 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 tr

17、ain service will bring us great convenience.3) . The bad weather our departure.Keys: 1). accelerated 2). acceleration 3). accelerated4. arrest vt.逮捕，拘留，吸引(注意)n.c逮捕 典例 1) . The criminal was arrested yesterday. 罪犯昨天被捕了。2) . What she did arrested my attention. 她所做的吸引了我的注意力。重點用法 be arrested for sth. 因某事

18、而被捕arrest one ' s atte吸引某人的注意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) . I ' II take the job regardless of the p不管報酬多少我都要這份工作。2) . He says what he thin ks, regardless of other people他怎么想就怎么說 s.不考慮另 U人的情緒。2. fed up with 受夠了，厭煩 典例 1) .1 ' m fed up with waiti ng f

19、or her to telepho n我等她的電話都等得不耐煩了。2) . What' s the matter? You look pretty fed up.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 (動物)以為主食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~。1) . Several children were feeding bread the ducks.2) . What do you feed your dog ?3)

20、. Cows feed grass.4) . I ' m fed up the same breakfast everoyrnming.II be doing in five years你是否想過五年後你要做3. look ahead 向前看；為將來謀劃 典例Have you looked ahead to what you短語歸納 look 短語：Iook back 向后看； 回顧Iook up 查找；形勢好轉(zhuǎn)；看望Iook forward to sth./doing sth. 盼望Iook out 留神；注意Iook up to sb. 尊敬 某人Iook on 旁觀；看作Iook

21、 into 調(diào)查Iook through 仔細查閱Iook over 快速瀏覽，復習Iook down (on/upon sth.) 向下看； 輕視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 century. 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 hundreds of years.2) . Our friendship the Iate 70s.3) . This is a Iaw (date) from

22、 the 17th century.Keys: 1). dates back 2). dates back to 3). datingV .重點句子(旨在提供句子結(jié)構(gòu)等所需材料)1. We have been excavating Iayers of ash aImost six metres thick, which suggests that they might have kept the fire burning aII winter. 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 “havebeen 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?qū)⒗^ 續(xù)延續(xù)至將來。如： We have been working on this project for over a month now. 到目前為止，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 buiIt a house. (完成 ) / They have been buiIding a house. ( 尚未完成 )2. Our evi