新概念英語第三冊教案

1、新概念英語第三冊教案【篇一：新概念英語第三冊備課筆記】新概念英語（第三冊）備課筆記lesson 01 a puma at large 逃遁的美洲獅new words and expression 生詞和短語學(xué)習(xí)詞匯時僅知道漢語語義是不夠的，要把單詞放在語句中體會其應(yīng)用 學(xué)習(xí)關(guān)鍵句結(jié)構(gòu)是則要把它放在段落結(jié)構(gòu)或文章里puma n. 美洲獅spot v. 看出 , 發(fā)現(xiàn)= see, pick out, recognize, catch sight of 強(qiáng)調(diào)結(jié)果, 辨別出 , 看見 , 識別 , 發(fā)現(xiàn)- - a tall man is easy to spot in the crowd. - he

2、has good eyefor spotting mistakes. 同意詞：- - find ：強(qiáng)調(diào)發(fā)現(xiàn)的結(jié)果/ find out ：查出事實(shí)真相- discover ：做出重大發(fā)現(xiàn)/ notice ：注意到- observe ：觀察 / watch ：觀察活動中的人或畫面spot n. 斑點(diǎn)- - there is a white spot on the shirt. on the spot 有兩個含義：1 立刻 , 馬上（ at once, immediately ）- anyone breaking the rules will be asked to leave on the spo

3、t.2 at the place of the action 在現(xiàn)場- - wherever she is needed, she is quickly on the spot.evidence n. 證據(jù)（不可數(shù)名詞）adj. 明顯的 , 顯然的 /adv. 明顯地 , 顯然證據(jù) ）in evidence 顯而易見的- he was in evidence at the party.accumulate v. 積累 , 積聚（強(qiáng)調(diào)積累的過程）- - as the evidence accumulates, experts from the zoo feltobliged to investi

4、gate. vt. 聚集 , 把某人召集在某處- the teachergathered his students in the class vt. 搜集 , 采集n.業(yè)余愛好）v.集合,集會/裝配- - a large number of people assemble on the square. vt.大量的儲存 （ - hoard up = store up 儲藏）- - the squirrel hoards up nuts for the cold winter（松鼠）（堅果） vt. 積聚（主要用于詩歌和文學(xué)作品）- the clouds amassedabove the hil

5、ls oblige v. 使感至 必須feel obliged to do sth 感覺有必要做某事（ n. 要求 , 需要） be obliged to do sth 被迫做某事- - they were obliged to sell their car to pay their debts off.（債務(wù)）hunt v.n. 追獵 , 尋找 （ hunt for ）- - the experts from london zoo began to hunt （v.） for a puma.- - the hunt （n.） for the puma proved the difficult

6、.（ prove vt. 證明 , 證實(shí)） search 搜尋某處為了尋找到某人或某物- - the police were searching the forest for the missing boy.run after 強(qiáng)調(diào)追趕, 追求- - look, a dog is running after a cat - what are you run after inyour life v. 追尋 （理想 ）新概念英語（第三冊）備課筆記convince v. 使信®1convince sb of sth n. 誠實(shí) , 正直） 我使他相信我的誠實(shí)。2 be convinced

7、that （adj.誠實(shí)的，正 v.追趕 （）blackberry n. 黑莓 /n. 漿果 human being 人類corner v. 使走投無路, 使陷入困境作為動詞, 經(jīng)常使用被動語態(tài)-the thief was cornered at last - the problem cornered me.corner n. 角落 - at the corner of the street-in the corner of the room-on the corner of the desktrail n. 一串 , 一系列trail vt. 跟蹤 , 追蹤（ = follow ）- - （

8、 criminal n. 罪犯）print n. 印痕cling v. 粘 （ clung, clung, clinging ） - she is always clinging to her mother.- - he clung to the hope that he would succeed. 他懷有成功的希望 stick v. 粘住 （ n. 信封stick to 堅持 （ - stick to the plan / stick to one 許諾 ns.tickyadj. 粘的 （ - sticky fingers ）直的）somehow adv. 不知怎么搞地, 不知什么原因=

9、by some means,in some way, for some reason unknown- - i ll get the book back somehow. 無論如何我要把這本書取回來。- i got lost somehow 不知怎么搞地, 我迷失了。somewhat adv.稍微 , 有點(diǎn) , 有些 （ = a little ）- the price is somewhat higher than i expect. （高的）disturb v. 令人不安disturbing adj. 令人不安的/ disturbed adj. 感到不安的surprising adj. 令人

10、驚訝的/ surprised adj. 感到驚訝的excitingadj. 令人激動的/ excited adj. 感到激動的wild adj. 野性的 , 野生的 investigate v. 調(diào)查 , 研究 description n.描寫 , 描述extraordinarily adv. 特別地，非常地，格外similar adj. 相似的 ,類似的 attack vt. 攻擊difficult adj. 困難的 , 艱難的 difficulty n. 困難 , 難點(diǎn) rabbit n. 兔 , 野兔 paw n. 手掌 , 手爪 fur n. 毛皮 , 毛 , 軟毛 bush n. 矮

11、樹叢新概念英語（第三冊）備課筆記fully adv. 充分地 , 完全地 collector n. 收藏家 , 征收者text 課文at large 逃遁的 , 沒有被控制的- the thief is still at largeat large 詳細(xì)地（）n. 細(xì)節(jié) , 詳情 - i need talk to you at large atlarge 總體來講（= as a whole ）（ hungry adj. 饑餓的 , 渴望的）where must the puma have come from?在英文的表達(dá)方式中，首先呈現(xiàn)給讀者的是結(jié)果（和中文不同）英文擅長用長句，中文擅長用短句

12、。（ panda n. 熊貓） cat-like 貓一樣的, 偷偷摸摸的/ dog-like 狗一樣的 / life-like 栩栩如生的一般來講定語從句和同位語從句緊隨在被修飾名詞的后面，但為了保持句子平衡，也可以把謂語動詞放到從句之前1 定語從句只是對于被修飾詞的補(bǔ)充說明、修飾- 定語從句的引導(dǎo)詞：- - 指人：主語who ；賓語 who, whom ；定語 whose - 指物： that（也可以指人）/ which- - 時間狀語：when / 地點(diǎn)狀語：where / 原因狀語：why 2 同位語從句則是講述被修飾名詞的內(nèi)容- 同位語從句的引導(dǎo)詞：- - 名詞 （做主語、賓語等）：關(guān)

13、系詞用that 而不是 which- - 時間： when ； 地點(diǎn)： where- - 定語從句中沒有what 這個關(guān)系詞，但what 可以引導(dǎo)同位語從句- i have no idea what has happened to him 。they 指代 reports ） take sth seriously = deal with sth seriously認(rèn)真地對待某事- i always take your suggestions seriously.草率地對待某事（輕率地）- don t take the hot potato lightly（棘手的問題）however adv.

14、然而（起轉(zhuǎn)折作用） as 連詞：隨著, 當(dāng) .之時 過去分詞做定語：- - the descriptions given by people海員 , 水手 , 船員 ） - a book written by luxunclaim to have done sth 聲稱曾經(jīng)做過某事- - he claimed to have been the manager of the large shop.where a woman picking 定語從句新概念英語（第三冊）備課筆記- - i still remember the school where i studied english.確定 ）u

15、nless it is cornered = if it is not cornered （unless conj.如果不 ,除非 ） - he will accept the job unless the salary is too low.search = hunt把某物留在后面：leave behind- - wherever he went, the wound left behind him a trail of blood.（n.血）英文表達(dá)方式習(xí)慣用被動語態(tài), 突出客觀事實(shí)。而中文則善于運(yùn)用動作的執(zhí)行者。puma fur was found clinging to bushes.

16、 （被動）? we foundthe puma fur clinging to bushes. （主動）- clinging to bushes是現(xiàn)在分詞短語做賓補(bǔ)complain of/about sth 抱怨某事on+ 名詞：強(qiáng)調(diào)動作正在進(jìn)行- - on the rise 在上升 / on the increase 在增加 - on the watch在觀看 / on the match 在比賽中- on the fishing trip 在釣魚的途中 / on holiday 在度假fully （ adv. 充分地 , 完全地）= completely = entirelysth be

17、in the possession of sb = sth be in sbs possession某物歸某人所有（主語是物） -the beautiful car is in my possession.= thebeautifulcar isin the possession of me.sb be in possession of sth 某人擁有某物（主語是人）- -i am in possession of the beautiful car. （in possession of 做表語）- - the person in possession of the big house is

18、 excited.（ inpossession of 做定語）take possession of 擁有went on = lasted （ last vi. 繼續(xù) , 持續(xù)）新概念英語（第三冊）備課筆記a ）只是一個具體的特定的事列，閱讀理解題的時候要把握中心大意it is disturbing to think that. 一想到 就心理不安-it isdisturbing to think that i fail my examination in the quietcountryside 在寧靜的山村special difficulties 難點(diǎn) exercises a1. at/fo

19、r2. to3. to4. in5. on exercises b1. he is the man we have heard about so much.（ vi. 倒塌 , 崩潰, 瓦解）3.whom did you receive a letter from? 特殊疑問句中whom 不能省略（本句）。定語從句中which 以及指代人的做賓語的whom, 在非正式用法當(dāng)中可以省略。省略時，介詞不能前置到關(guān)系代詞whom, which 前，只能用于非固定的動詞短語后面。固定的動詞短語look for ：尋找（去掉for 后 look 沒有尋找的意思，所以介詞for不能前置）非固定的動詞短語l

20、ook at ：注視live in ：居?。ㄈサ鬷n 后 live 仍有居住的意思，所以介詞in 可以前置） this is the old house in which he lived. = this is the oldhouse he lived in. 4.this is the road we came by?5.where is the pencil you were playing with?multiple choice questions 多項(xiàng)選擇1正確答案：d in common adv. 共有（替換了 similar ） 2正確答案：bb ） large catv.說服

21、，勸說3答案正確：c做理解題時要緊扣主題、緊扣中心大意。文章最后一句話總結(jié)了大意 句型結(jié)構(gòu)題和詞匯題是每課的關(guān)鍵4 答案正確：cmake的用法：make somebody do （在主動語態(tài)中不定式的符號to 應(yīng)該省略）be made to do （被動語態(tài)中不定式的符號to 必須補(bǔ)充完整）-they made her wait for hours. ? she was made to wait for hours.5答案正確：da ）把 say 改成 claim 就對了 （ - people claimed to have seenthe puma. ） d）清楚的道明了動作發(fā)生的先后關(guān)系6

22、正確答案：b原句中的 when引導(dǎo)的時間狀語從句表示：一就（as soon as）被動： on being observed, it immediately ran away. 主動： on observing her, it immediately ran away.on seeing me, he waved to me.7正確答案：dexcept 可以和名詞/名詞性從句進(jìn)行搭配（也可是when/if 引導(dǎo)的從句形式）unless = ifnot = except on the condition thatwhen= if-except when they are cornered.=ex

23、cept if they arecornered.- whenever you come, you are welcome. = if ever you come,you are welcome. 8正確答案： da ） must be 只是對客觀現(xiàn)實(shí)的推測，時態(tài)不一致-對于過去事實(shí)推測一定要用：情態(tài)動詞+ have +過去分詞9正確答案：c【篇二：新概念英語3lesson13 教案】新諾亞外語培訓(xùn)學(xué)校教案234【篇三：新概念英語第三冊教案lesson1-2 】lesson 01 a puma at large 逃遁的美洲獅part one: new words and expression

24、生詞和短語1 、 puma n. 美洲獅 a large cat-like animallion, tiger, leopard 豹 , jaguar 美洲虎 , cougar 美洲豹 , cheetah 獵 豹 , lynx 大山貓 , panther 黑豹2 、 spot v. 看出 , 發(fā)現(xiàn) to see or find sth with difficulty 不易察覺= see, pick out, recognize, catch sight of 強(qiáng)調(diào)結(jié)果, 辨別出 , 看見 , 識別 , 發(fā)現(xiàn)同意詞：- find ：強(qiáng)調(diào)發(fā)現(xiàn)的結(jié)果/ find out ：查出事實(shí)真相-discov

25、er ：做出重大發(fā)現(xiàn)/ notice ：注意到- observe ：觀察 / watch ：觀察活動中的人或畫面observe: to see and notice sth（ 正式 ） 觀察，觀測discover: to find sth already in existencerecognize: to figure out sth/sb known alreadydetect: to disclose sth hidden or in disguise 探測explore: to examine sth thoroughly in order to test of findabout it

26、 internet explorerspot 點(diǎn)，斑點(diǎn)a beauty spot, solar spot, - there is a whitespot on the shirt.spotlight, be in the spotlight tom cruse is in the spotlight in american film industry.a leopard will not change its spot. 江山易改，本性難移on the spot 有兩個含義：1 立刻 , 馬上（ at once, immediately ） - anyone breaking the rule

27、s will be asked to leave on the spot.2 at the place of the action 在現(xiàn)場 - wherever she is needed, she is quickly on the spot.3 、 evidence n. 證據(jù)（不可數(shù)名詞）adj. 明顯的 , 顯然的 /adv. 明顯地 , 顯然 證據(jù) in evidence 顯而易見的- he was in evidence at theparty.witness 證人， judge 法官， jury 陪審團(tuán)，court of law 法庭self-evident a. 不言自明的th

28、e declaration of independence: wehold these truths to be self-evident, that all men are createdequal, that they are endowed by their creator with certainunalienable rights, that among these are life, liberty and thepursuit of happiness. 我們認(rèn)為以下事實(shí)是不言自明的：所有的人都是生而平等的，他們天生就被上帝賦予了不可剝奪的權(quán)利，人有生存的權(quán)利，獲得自由的權(quán)利，追

29、求幸福的權(quán)利。4 、 accumulate v. 積累 , 積聚（強(qiáng)調(diào)積累的過程）- as the evidence accumulates, experts from the zoo feltobliged to investigate. vt. 聚集 , 把某人召集在某處- the teachergathered his students in the class vt. 搜集 , 采集 （ n. 業(yè)余愛好）v. 集合 , 集會 / 裝配 - a large number of people assemble on thesquare. vt. 大量的儲存（ - hoard up = st

30、ore up 儲藏） - thesquirrel hoards up nuts for the cold winter. vt. 積聚（主要用于詩歌和文學(xué)作品）- the clouds amassed above the hills5、oblige v.使感到必須feel obliged to do sth感覺有必要做某事 - i feel obliged to say no to his demandbe obliged to do sth 被迫做某事- they were obliged to selltheir car to pay their debts off. （債務(wù)）compel

31、: to make people have a particular feeling or attitude 9-year s compulsory educationdrive: to make someone feel or do sth bad or unpleasantdrive sb nuts 把人逼瘋了6、 hunt v.n. 追獵 , 尋找 （ hunt for 搜尋，尋找）hunt for a job,job hunter, head hunter, bargain hunter, go hunting for search搜尋某處為了尋找到某人或某物- the police

32、were searching theforest for the missing boy.run after 強(qiáng)調(diào)追趕, 追求 - look, a dog is running after a cat-what are you run after in your life v. 追尋（理想） v. 追趕 （7、 、 blackberry n. 黑莓 /n. 漿果8、 human being 人類 mankindin the long history of the mankindhuman racemenbe 動詞 存在 to be or not to be 是生存呢，還是滅亡？being 1）

33、 -creaturegod being, animal being2） -existence come into being 形成，成立 for the time being 眼 下，目前9 、 corner v 被逼到墻角里，使走投無路, 使陷入困境作為動詞, 經(jīng)常使用被動語態(tài)- the thief was cornered at last- the problem cornered me. acornered beast will do something desperate.corner n. 角落 - at the corner of the street - in the corne

34、r ofthe room- on the corner of the deskaround the corner: is coming cut corners 走捷徑，抄近路10、 trail n. 一串 , 一系列 a trail of a trail of mud/bloodwherever he went, the playboy left behind him a trail of broken hearts.trail vt. 跟蹤 , 追蹤( = follow ) 11 、 print n. 印痕 paw print, finger print12、 cling v. 粘 ( cl

35、ung, clung, clinging ) - she is always clinging to her mother.- he clung to the hope that he would succeed. 他懷有成功的希 望stick v. 粘住 () n. 信封 stick to 堅持 ( - stick to the plan / stick to one 許諾 n.sticky adj. 粘的 ( - sticky fingers )13、convince v.使信服1convince sb of sth ( n. 誠實(shí) , 正直) 我使他相信我的誠實(shí)。2 be convinc

36、ed that (adj.誠實(shí)的，正直的)14、 somehow adv. 不知怎么搞地, 不知什么原因= by somemeans, in some way, for some reason unknown- i ll get the book back somehow. 無論如何我要把這本書取回來。- i got lost somehow 不知怎么搞地, 我迷失了。somewhat adv.稍微 , 有點(diǎn) , 有些 ( = a little ) - the price is somewhat higherthan i expect. (高的)15、 disturb v. 令人不安distu

37、rbing adj. 令人不安的/ disturbedadj. 感到不安的surprising adj. 令人驚訝的/ surprised adj. 感到驚訝的excitingadj. 令人激動的/ excited adj. 感到激動的part two: text 課文listen and answer the question: where must the puma have come from?表推斷或猜測a probabilitymust have happened or must be based on logical reasoningthe puma must have esca

38、ped from a private collection.這頭美洲獅肯定是私人豢養(yǎng)的。這個結(jié)論是在有了很多線索之后作出來的。整篇課文也講述了越來越充實(shí)的證據(jù)accumulating evidence 。講述專家從不太當(dāng)真nottaken seriously ，到不得不去調(diào)查feeling obliged to investigate ，到最后完全肯定的一個過程fully convinced 。那么這些證據(jù)究竟有哪些，又是怎樣影響了專家的看法，大家在學(xué)習(xí)過程中要理清這些脈絡(luò)。 now let s look at some language points. 下面看一下課文的語言點(diǎn)。languag

39、e points:1 、 a puma at large: be at large ( a dangerous person or animalhaving escaped from somewhere and may cause harm)逃遁的 ,沒有被控制的，可能給別人帶來傷害。此處，at large 作后置定語。- the thief is still at largeat large 詳細(xì)地(n. 細(xì)節(jié) , 詳情 - i need talk to you at largeat large 總體來講(= as a whole ) escape 逃跑， flee away 跑開，scat

40、ter away ：四散跑開，evade tax 逃稅， desert one s army,cut class 逃課2 、 pumas are large, cat-like animals which are found inamerica.cat-like 貓一樣的, 偷偷摸摸的, life-like 栩栩如生的，mother-like,childlike(lovely), childish(immature)be found (there be): 產(chǎn)于，分布3when reports came into london zoo that a wild puma hadbeen spot

41、ted forty-five miles south of london, they were nottaken seriously.表示看或看見的短語：spotted ( to notice something verydifficult to see, or find something being looked for看見不易看見的東西，發(fā)現(xiàn)了正在尋找的東西), have seen (最常用),observed( 書面化 )i spotted someone coming out of the building.一般來講定語從句和同位語從句緊隨在被修飾名詞的后面，但為了保持句子平衡，也可

42、把謂語動詞放到從句之前1 定語從句只是對于被修飾詞的補(bǔ)充說明、修飾- 定語從句的引導(dǎo)詞：- 指人：主語who ；賓語 who, whom ；定語whose- 指物： that(也可以指人)/ which- 時間狀語：when / 地點(diǎn)狀語：where / 原因狀語：why2 同位語從句則是講述被修飾名詞的內(nèi)容- 同位語從句的引導(dǎo)詞：- 名詞（做主語、賓語等）：關(guān)系詞用that 而不是which- 時間：when ； 地點(diǎn)： where- 定語從句中沒有what 這個關(guān)系詞，但what 可以引導(dǎo)同位語從句。能連接同位語從句的名詞有：belief, information, fact,sugges

43、tion, idea, problem, doubt, order, rumor, discover, evidence, opinion, conclusionsouth of 在 ?以南they were not taken seriously 人稱或指示代詞的替代含義要回到句子的切近部分去尋找它的中心含義。take sth seriously = deal with sth seriously 認(rèn)真地對待某事- ialways take your suggestions seriously. 草率地對待某事- don ttake the hot potato lightly.4howev

44、er, as the evidence began to accumulate, experts fromthe zoo felt obliged to investigate,for the descriptions given by people who claimed to have seenthe puma were extraordinarily similar.however 語篇標(biāo)識詞however adv. 然而（起轉(zhuǎn)折作用） as 連詞：隨著 , 當(dāng) .之時for 說明原因，不置于句首。as 不強(qiáng)調(diào)原因的重要性，since 既然，弱因果關(guān)系accumulate: to gra

45、dually increase over a period of time逐漸增加或積累fell obliged to do sth 經(jīng)常做書面語must, have to, have duty todo something because of a law or a rule or situation，必須，有責(zé)任、有義務(wù)做某事i felt obliged to invite him.claimed to have done 動詞不定式完成式，體現(xiàn)它所表示的動作發(fā)生在謂語動詞之前。be similar to sb in character ， bear a resemblance to re

46、semblefather 酷似父親take after father 隨爹（口）過去分詞做定語：- the descriptions given by people- the storytold by the sailor （n. 海員 , 水手 , 船員 ）5 、 the hunt for the puma began in a small village where a woman picking blackberries saw a large cat only five yards away from her.hunt 捕獵，在文中指搜尋go on a deer/fox hunt 獵鹿

47、/獵狐huntfor second-hand books 淘書 job-hunting 找工作 pick 采摘 pick cotton, we need to pick someone reliable. 挑選 pick and choose 挑挑揀揀pick nose/ears/teeth 挖掏剔 where a womanpicking 定語從句-i still remember the school where i studied english.6 、 it immediately ran away when she saw it, and experts confirmed that

48、 a puma will not attack a human being unless it is cornered.corner: be forced into a situation that is not easy to escape陷入一個困境，被逼得走投無路確定 ）unless it is cornered = if it is not cornered （unless如果不 , 除非 ）- he will accept the job unless the salary is too low. a： mayi have the loan? b: you offer good se

49、curity. a. but b. unless vided 如果 d but for 要不是 . -如果選unless: if you offergood security, you may not have the loan7 、 the search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the ve: turn out to be 證明是，原來是（不及物動

50、詞）the rumorproved false.they proved her innocence. 證實(shí)（及物動詞）。他們證實(shí)了她是 無辜的。8 、 wherever it went, it left behind it a trail of dead deer and small animals like rabbits.9 、 paw prints were seen in a number of places and puma fur was found clinging to bushes.cling-clung-clung, cling to: to stick to sth ti

51、ghtly粘在 ? 上his wet shirt clung to his body.she clings to the belief that her husband will come back.（固守，堅持）她固執(zhí)地相信她的丈夫會回來。beat around the bush 拐彎抹角，旁敲側(cè)擊10several people complained of cat-like noises at night and a businessman on a fishing trip saw the puma up a plain about the weather 抱怨天氣不好c

52、omplain of aheadache 報告、訴說某種情形on+ 名詞：強(qiáng)調(diào)動作正在進(jìn)行- on the rise 在上升 / on the increase 在增加 - on the watch 在觀看 / on the match 在比賽中- on the fishing trip 在釣魚的途中/ on holiday 在度假10 、 the experts were now fully convinced that the animal wasa puma, but where had it come from?fully （ adv. 充分地 , 完全地）= completely =

53、 entirely11as no pumas had been reported missing from any zoo in thecountry, this one must have been in the possession of aprivate collector and somehow managed to escape.sth be in the possession of sb = sth be in sbs possession某物歸某人所有（主語是物）- the beautiful car is in my possession.= the beautiful car

54、 is inthe possession of me.sb be in possession of sth 某人擁有某物（主語是人）-i am in possession of the beautiful car. （in possession of 做表語）- the person in possession of the big house is excited.（ inpossession of 做定語）in the authority of 由 ? 管轄 in the care of 由 ? 照看 in thecharge of 由 ? 負(fù)責(zé)take possession of 擁有1

55、1 、 the hunt went on for several weeks, but the puma was not caught.went on = lasted （ last vi. 繼續(xù) , 持續(xù)）12 、 it is disturbing to think that a dangerous wild animal isstill at large in the quiet countryside.disturb: 打攪 interrupt, sorry to disturb you. do not disturb.本文指 worry 令人不安，令人擔(dān)憂it is disturbin

56、g to think that.一想到,就心理不安wild tame 馴服 wild cat 大型貓科動物stray dogs 野狗domestic animals 家養(yǎng)動物domestic violence 家庭暴力part three: i. key structures 簡單句、并列句、復(fù)合句本文主要由復(fù)雜句構(gòu)成：要理解一復(fù)雜句最重要的是搞清句子的結(jié)構(gòu)，然后通過連接詞，分清主句和從句的關(guān)系。就是說，要把握主句和從句的位置，而主句和從句的關(guān)系是由連接詞來判斷的。however, as （伴隨主句同時發(fā)生）the evidence began toaccumulate, experts from the zoo felt obliged to investigate,