外研版英語選擇性必修第二冊(cè)

Unit5AdelicateworldMainlyrevisionforthisunit

本課件主要內(nèi)容安排

課件內(nèi)容1.單元構(gòu)詞擴(kuò)展詞匯2.單元核心詞匯講解3.單元專題語法講解4.單元重點(diǎn)句型講解

單元構(gòu)詞擴(kuò)展詞匯

dramatically

conservationimmunecomparision

mysterycriteriasecuritybiologicalecological

explosion

varyendangered單元重點(diǎn)短語?詞匯一appetiten.食欲，胃口，愛好，欲望◆教材原句Unfortunately,thecatssubsquentlydevelopedanappetiteforthebirds,too.不幸的是，貓科動(dòng)物后來也對(duì)鳥類產(chǎn)生了食欲?！粢c(diǎn)必記

develop/create/arouseanappetitefor對(duì)…產(chǎn)生欲望;tosb'sappetite合某人的胃口;improve/promotetheappetite增進(jìn)食欲;lackappetite缺乏食欲satisfyone'sappetite滿足食欲跟蹤訓(xùn)練1.Theirappetite__________newproductsalsocontributestoexcessivebuyingbutitisnotnecessaryforthem.2.Hehassuchabigappetite_________readingthatyouneverseehimwithoutabook.3.她有強(qiáng)烈的求知欲。（翻譯）___________________________________4.Exerciseswillincreaseyourappetiteforfood.（翻譯）________________________5.Hehas______strongappetiteforlearningonhisownandreading.Shehasagreatappetiteforknowledge.鍛煉身體會(huì)增進(jìn)食欲。

forfor

a?詞匯二multiplyv.(使)成倍增加◆教材原句Theymultipliedrapidlyandbeganeatingthenativevegetationanddiggingholes,whichcausedsoilerosion.他們迅速繁殖，開始吃當(dāng)?shù)氐闹脖缓屯诙?，造成了水土流失?！粢c(diǎn)必記

multiplyvi.（快速）繁殖

multiply...by......乘以...multipliestheriskof...大大增加......風(fēng)險(xiǎn)◆考點(diǎn)呈現(xiàn)1.Three___________(multiply)byfourmakestwelve.2.Twomultipliedbyfour____________(equal)eight.3.Itispossibletomultiplythesebacteriainthelaboratory.(翻譯)————————————————————multipliedequals在實(shí)驗(yàn)室里繁殖這些細(xì)菌是可能的。?詞匯三owev.欠（帳）

應(yīng)該做；負(fù)有義務(wù)◆教材原句butwehumansoweittotheislandtogiveitahappyending.但我們?nèi)祟愑欣⒂谶@個(gè)島嶼，應(yīng)該給它一個(gè)幸福的結(jié)局?！粢c(diǎn)必記

owesthtosb=owesbsth欠某人某物；歸因（功）于...oweittosbthat-clause把...歸于...oweittosbtodosth把...歸于...owesbafavour欠某人一個(gè)人情

owingto...由于，因?yàn)楦櫽?xùn)練1.Myheadteachergivesusmuchloveandcare,_________whomweowemanythanks.2.Ioweittohim____________Ihavesucceededinpassingthetest.3.Ithinkthatyoushouldoweittoyourself___________(get)someprofessionalhelpwithjob-hunting.4.HowmuchdoIoweyou_________thegroceries?5.Theisland'spresenteconomyowesagooddeal________tourism.6.Heowedhissurvivaltohisstrength___________aswimmer.

to

thattoget

for

to

as?詞匯四immunityn.免疫力◆教材原句Itturnedoutthattheydevelopedanimmunitytothevirus,andtheirnumbersexplodedonceagain.結(jié)果發(fā)現(xiàn)，它們對(duì)病毒產(chǎn)生了免疫力，它們的數(shù)量再次暴增。◆要點(diǎn)必記

immuneadj.有免疫力的；不受影響的；

beimmunetosth對(duì)...有免疫力；不受...影響；beimmmunefrom免除；受保護(hù)；

artificialimmunity人工免疫

animmunitytosth對(duì)...的免疫力跟蹤訓(xùn)練1.Hewassostubbornthathewasimmune_______allsuggestions.2.Therulesaysthatnobodywillbegivenimmunity_______taxation.3.Childrenwhohavegottenthechickenpoxbuildanimmunity_____itsothattheydonotgetitasecondtime.4.Birdsinoutsidecagesdevelopan_________(immune)toairbornebacteria.5.Challengesareregularvisitorsinourlife,andnobodyisimmunetothem.(翻譯)__________________________________________

immunity

to

from

to我們常常會(huì)遇到挑戰(zhàn)，沒有人會(huì)不受到它的影響。?詞匯五e(cuò)xplodev.突然增加◆教材原句Itturnedoutthattheydevelopedanimmunitytothevirus,andtheirnumbersexplodedonceagain.結(jié)果發(fā)現(xiàn)，它們對(duì)病毒產(chǎn)生了免疫力，它們的數(shù)量再次暴增?！粢c(diǎn)必記explosionn.爆炸；爆發(fā)；激增abomb/nuclear/gasexplosion炸彈╱核╱氣體爆炸;anexplosionofinterestinlearningChinese學(xué)習(xí)漢語的興趣陡然上升；

explodeinto/with(anger)勃然(大怒);大發(fā)(雷霆);突然發(fā)生(危險(xiǎn));explodeintolaughter哄然大笑跟蹤訓(xùn)練1.Aftertenminutesthegameexploded_________life.2.Weallexplodedintowild__________(laugh)whenweattendedtheteacher'slecture.3.The___________(explode)whichfollowedblastedoutthewallofherapartment.4.Doyoufearthatyou'llburstintotearsorexplode_________angerinfrontofher?5.Suchangerfilledherthatshefeltshemightexplodewithit.(翻譯）__________________________________

intolaughter

explosion

with她怒火中燒，感到自己快要爆炸了。?詞匯六sessionn.一段時(shí)間，(會(huì))期◆教材原句Theendofalectureisoftenfollowedbyashortquestion-and-answersession.講座結(jié)束后通常會(huì)有一個(gè)簡(jiǎn)短的問答環(huán)節(jié)?！粢c(diǎn)必記insession在開會(huì)；在開庭；在上課aphoto/recording/trainingsession一次攝影，一場(chǎng)錄音，一堂訓(xùn)練課等；inclosedsession秘密會(huì)議◆考點(diǎn)呈現(xiàn)

1.TheArabLeagueismeeting________emergencysessiontoday.

2.Itturnedouttobe_______interestingsessionwithalivelydebate.

3.Ithinkwe'velearnedalotaboutoneanotherinthissession.(翻譯)

____________________________________________我認(rèn)為這段時(shí)間我們相互有了很多了解。

in

an語法it用作形式賓語一.概述：

it常常可代替不定式，動(dòng)名詞短語或者從句，而將真正的賓語放在句子后面，以平衡句子結(jié)構(gòu)。二.用法：it作形式賓語，主要分為下列幾種情況:1.動(dòng)詞+it+adj/n.+(for/ofsb)+todosth；2.動(dòng)詞+it+nogood/nouse/useless/awasteoftime...+doingsth;3.動(dòng)詞+it+介詞（to/forsb）that-從句；（eg.takeitforgrantedthat-clause）;4.動(dòng)詞+it+when(if)-從句（常見的有enjoy,hate,love,like,dislike,appreciate,prefer）。

跟蹤訓(xùn)練

1.Wereallyappreciate___________whensheofferedtohelpatyourearlierconvenience.2.Wethinkitnouse_______________(complain)ifyoudonothing.3.Youcanputit_________itwasarrangedbefore.4.Idon’tfeelitdifficult_______________(understand)theSpecialEnglish.5.Theyfound_______pleasantthattheyworkedwithusChinese.6.Ileaveittoyourownjudgement__________youshoulddoit.7.Hemakesitarulenever_____________(borrow)money.

complaining

it

that

tounderstand

it

whether

toborrow

單元重點(diǎn)句型1

1.Norwouldtheyfailtoimaginehowitsnativeinhabitants,includingroyalpenguins,andelephantseals,existedinperfectharmonywiththeirnaturalhabitat.他們也不會(huì)忘記這里的土著居民，包括皇家企鵝和海象，是如何與他們的自然棲息地和諧共存的。【句型分析】

否定副詞nor位于句首，句子須用部分倒裝語序。【句型拓展】a.

當(dāng)含有否定意義的詞或者短語在原句中作狀語時(shí)，句子須用部分倒裝語序。部分倒裝語序常常采用一般疑問句序，即：否定詞+be/助動(dòng)詞/情態(tài)動(dòng)詞+主語+謂語....b.這樣的否定詞有：never/neither/seldom/hardly/rarely/scarcely/bynomeans/innoway/atnotime等。跟蹤訓(xùn)練1.Iwillneverknowwhatwasinhismindatthemoment,_______________willanyoneelse.2.Seldom__________itoccurtothemtowanderabit,totakeamomenttoseewhatwasaroundthem,3.Nor_______IknowwhatdrivesmetobehaveasIdousually,forIjustsitthereinsilence.4.I'vetriedhardtoimprovemyEnglish.Butbynomeans_______theteachernotsatisfiedwithmyprogress.5.Onlythen________sherealizehowmuchdamagehadbeencaused.

neither/nordid

do

isdid

單元重點(diǎn)句型2

2.Recentyearshaveseenmoreandmorepetslidersescapingorbeingreleasedfromhomes,andsomeownersbelievetoreleasethemintothewildisnobigissue.近年來，越來越多的寵物溜出家門或被放生，一些主人認(rèn)為把它們放生到野外不是什么大問題?！揪湫头治觥?/p>

本句中，see意為“見證，目睹，經(jīng)歷”，主語為recentyears,最近這些年見證了....【句型拓展】

see意為“見證，目睹，經(jīng)歷”時(shí)，常常用時(shí)間或者地點(diǎn)的名詞作主語，表示某時(shí)間或地點(diǎn)“見證，目睹，經(jīng)歷”了某事。類似的詞還有：find/witness/say/experience等，這些詞以物作主語，表示一種擬人的手法，使得語言更生動(dòng)。理解應(yīng)用1.Thelast30years_____________(see)thegreatnumberofl