選修八unit5知識點

1、Unit 5 Meeting your ancestors單元要點預(yù)覽（旨在讓同學(xué)整體了解本單元要點）詞語1. used to / would2. interrupt / disturb / bother辨析3. assume / suppose / presume1. alternative n.c 替換物alternatively adv. 作為adj.選擇性的，二中擇一的選擇，二者擇一2. accuracy n.u 精確性， 正accurate adj. 正確的，accurately adv. 正確地，確度精確的 inaccurate adj.精確地 inaccurately adv.不

2、準確的不準確地3. assume vt.假定；設(shè)想；assumption n. 假定，assumed adj. 假定的，詞形采用；承擔(dān)設(shè)想，假裝，就職假裝的，裝的4. analysis n.c 分析，分解analyse(analyze) vt. 分analytical adj. 分析的，變化析，分解解析的詞5. significance n. 意義，含significant adj. 相當(dāng)significantly adv. 意義匯義；重要性，重大數(shù)量的；意義重大的深遠地，重大地部6. division n. 分(開，配，擔(dān)； divide vt. 分 (開 )； vi. 分分歧，裂 )；除

3、(法 ) ；部門開7. skill n.c,u 技能，技巧，skillful adj. 靈巧的，skillfully adv. 巧妙地，熟練，巧妙熟練的，制作精巧的技術(shù)好地重點單詞重點詞組重點句型1. interrupt 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，

4、從時候就有了1. We have been excavating layers of ash almost six metres thick, which suggests that they might have kept the fire burning all winter.2. Our evidence suggests they did indeed wear clothes made form animal skins.重點語法復(fù)習(xí)現(xiàn)在進行時（見語法部分）語言要點（模塊）.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

5、 都可用來表示過去經(jīng)常性或習(xí)慣性的動作。would 只能表示反復(fù)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(xí)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。【練習(xí)】用 used to 或 would 填空。1). When we were boys we _ go swimming every summer.2). He _ be very poor.3). People _ believe that the earth was flat.4). He _ go to the park as soon a

6、s he was free.Keys: 1). used to / would2). used to3). used to 4). would ( 現(xiàn)在有可能再去 )2. interrupt / 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弧薄！揪毩?xí)】選擇 interrupt ， disturb ， bother 的正確形式填空。1). She was _ to hear of your illnes

7、s.2). I m sorry tothe meeting, but there is an urgent long-distance call for Mr. Zhou.3). Don tyourself too much about me.4). We _ in the middle of our conversation.Keys: 1). disturbed2). interrupt3). bother4). were interrupted3. 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建

8、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?xí)】選擇 assume，suppose， presume 的正確形式填空。1). I _ that he has gone for a walk.2). We _ the situation will improve.3). From the available data it may be _ that the writer was very famous in the 4th century.Keys: 1). assume2). suppose3

9、). presumed.詞性變化 （旨在提供語法填空所需材料）1. alternative n.c 替換物alternatively adv. 作為選擇，adj.選擇性的，二中擇一的二者擇一2. accuracy n.u 精確性，正確accurate adj. 正確的，精確accurately adv.正確地，精確度的 inaccurate adj.不準確的地 inaccurately adv. 不準確地3. assume vt.假定；設(shè)想；assumption n. 假定，設(shè)想，assumed adj. 假定的，假裝采用；承擔(dān)假裝，就職的，裝的4. analysis n.c 分析，分解ana

10、lyse(analyze) vt.分析，分analytical adj. 分析的， 解析的解5. significance n.意義，含義；significant adj. 相當(dāng)數(shù)量的；significantly adv. 意義深遠重要性，重大意義重大的地，重大地6. division n. 分 (開，配，擔(dān)；divide vt. 分 (開 )； vi. 分開歧，裂 )；除 (法 )；部門7. skill n.c,u 技能，技巧，熟skillful adj. 靈巧的，熟練skillfully adv. 巧妙地，技術(shù)練，巧妙的，制作精巧的好地【練習(xí)】用括號內(nèi)所提供詞的適當(dāng)形式或介詞填空。1).

11、The way was blocked, so we went by an _ (alternatively) road.2). The design is slightly _ (accurate), so we must make some changes.3). The boss is worried about the _ (accurate) of the statistics.4). It s impossible to predict the weather _(accurate).5). A lot of people make the _ (assume) that pove

12、rty only exists in the Third World.6). The _ (analyse) of the samples on the murder spot showed some valuable clues to thepolice the address.7). Students need to possess certain basic _ (skillful) by the time they finish schoo1.8). He was valued for his skill _ ( 介詞 ) raising money for the company.9

13、). The discovery of the new drug is of great _ (significant) to people suffering fromheart problems.10). Sometimes there is no simple _ (divide) between good and evil.Keys:1). alternative2). inaccurate3). accuracy4). accurately6). analysis7). skills8). in9). significance5). assumption10). division.重

14、點詞匯 （旨在提供詞匯綜合運用所需材料）1. interrupt vt.&vi.阻斷，中斷；打岔；插嘴interruption n.中斷，打斷典例 1). Traffic in the city was interrupted by a snowstorm.市內(nèi)交通被暴風(fēng)雪所阻斷。2). It is rude to interrupt.打斷別人的話，是不禮貌的。 重點用法 interrupt (sb/sth) (with sth)打斷（某人）講話；打岔；打擾 練習(xí) 用 interrupt 的正確形式填空。1). Electricity _ (interrupt) in the cour

15、se of work.2). Let s go somewhere where we can talk without _ (interrupt).Keys: 1). was interrupted2). interruption2. applaud vt. 鼓掌，稱贊，贊成applause n. 鼓掌歡迎，歡呼典例 1). Everyone applauded when the play ended. 演出結(jié)束時，大家都熱烈鼓掌。2). I applaud your decision.我贊成你的決定。 重點用法 applaud sb. for sth因某事而贊揚某人applaud the d

16、ecision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 economic 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(xí) 用 accelerate 或其同根詞的適當(dāng)形式填空。1). The driver stepped on the gas and _ the car.2). The _ of train

17、 service will bring us great convenience.3). The bad weather _ our departure.Keys: 1). accelerated2). acceleration3). 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. 因某事而被捕

18、arrest one s attention吸引某人的注意under arrest 被捕；被拘留.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 ll take 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 people他怎么想就s怎feelings么說，.不考慮別人的情緒。2. fed up with受夠了，厭煩典例 1). I m fed up with waiting for her to telep

19、hone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(xí) 根據(jù)句子的要求在括號里填入適當(dāng)?shù)慕樵~。1). Several children were feeding bread _ the ducks.2). What do you feed your dog _?3). Cows feed _ grass.

20、4). I m fed up _ the same breakfast everyorningm.Keys: 1). to2). on3). on4). with3. look ahead 向前看；為將來謀劃典例 Have you looked ahead to what youll be doing in five years你是否想過五年time?後你要做些什麼 ?短語歸納 look 短語：look back 向后看；回顧look up 查找；形勢好轉(zhuǎn)；看望look forward to sth./doing sth.盼望look down (on/upon sth.)向下看；look o

21、ut留神；注意look up to sb. 尊敬 某人look on 旁觀；看作輕視look into調(diào)查look through仔細查閱look over 快速瀏覽，復(fù)習(xí)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(xí) 根據(jù)句子的要求在括號里填入短語或所給詞的適當(dāng)形式。1). The custom _ _ hundreds of years.2). Our friendship_ _ _ the late 70s.3). This

22、is a law _ (date) from the 17th century.Keys: 1). dates back2). dates back to3). dating.重點句子 （旨在提供句子結(jié)構(gòu)等所需材料）1. We have been excavating layers of ash almost six metres thick, which suggests that they might have kept the fire burning all 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 built a house. ( 完成 )/They have been building a house. ( 尚未完成 )2. Our