译林八年级英语上册Unit 7《Wor d power》课件

WordpowerUnit7ThenaturalworldWecanaddthesuffix-Iytosomeadjectivestoformadverbsoradjectives.Wecanalsoaddthesuffix-ly

tosomenounstoformadjectives.AdjectiveAdverbrealbadcarefulslowneareasyreallybadlycarefullyslowlynearlyeasilyNounAdjectivefriendloveyearmonthweekdayfriendlylovelyyearlymonthlyweeklydailyAdjectiveAdjectivekindlikelivedeadkindlylikelylivelydeadlyTIPThefollowingadjectivesarealsoadverbs:daily weekly monthlyyearly kindly deadlyAMillieiswritingaboutcoralreefs.Completehertextwiththecorrectformsofthewordsinbrackets.YoumighthearabouttheGreatBarrierReefinAustralia,thelargestreefsystem/'sɪstəm/onearth.Youcanevenseeitfromspace!Whenyoulookatacoralreef,youmightthinkitisjustagroupofcolourfulrocks.However,coralsare(1)

_________(actual)livingthings.actually长难句分析：这是一个主从复合句。从句是由When引导的时间状语从句，主句中包含了一个省略了that的宾语从句。~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Nowmanyscientistsareworriedaboutcoralreefsbecausetheyarefacingseriousproblems.Thebiggestproblemisoceanpollution.Theoceanwaterisbecomingdirtierbecauseofdifferenthumanactivities,andthiscauses/'kɔːzɪz/coralstodie(2)__________(slow).What‘smore,climatechangeis(3)__________(great)damaging

/'dæmɪdʒɪŋ/

theocean‘senvironment.Theoceanisgettingwarmer,anditmaynotbea(4)_________(friend)environmentforcoralreefs.slowlygreatlyfriendly(5)__________(lucky),moreandmorescientistsarepayingattentiontocoralreefs.Theyareworking(6)__________(hard)tofindwaystosavethem.~~~~~~~~~~后接名词、代词、动词-ing形式Luckilyhard在英语中，后缀“-ly”有两个用途：一是用作副词的标志，最常见的是将形容词转化为副词，表示动作的方式、程度或频率，用于修饰动词、形容词或其他副词；一是用作形容词的标志，通常是将名词转化为形容词，表示“具有……性质的”，用于描述人或事物的特征。此外，后缀“-ly”也可加在一些形容词后，构成形容词。探究一构词法后缀-ly1.后缀“-ly”用于形容词后，将其转化为副词，用来描述动作的方式或程度。quick→quickly（快速地）；slow→slowly（缓慢地）；wise→wisely（明智地）。2.后缀“-ly”用于名词后，将其转化为形容词：①表示“具有……性质或特点的”，friend→friendly（友好的）。②表示“每隔……时间的”，week→weekly（每周的）；year→yearly（每年的）。3.后缀“-ly”用于形容词后，词性不变，但含义发生质变。lone（单独的）→lonely（孤独的）；dead（死的）→deadly（致命的）。学会运用1:Hereadthelettermore

_________(careful)thesecondtime.学会运用2:Mysisterisgoodatmath.Shecanworkouttheproblems

__________(easy).学会运用3:The__________

(friend)waiterserveduswithabigsmile.学会表达4:我们应该做一些日常锻炼来保持健康。Weshoulddosome__________________tokeephealthy.carefullyeasilyfriendlydailyexercise1cause/kɔːz/vt.

使发生，造成，导致

n.原因；理由(教材P100)(观察)·Theheavyraincausedafloodinthecity.大雨导致了城市里面的洪水。·Themistakehascausedmealotoftrouble.这个错误给我带来了很多麻烦。·Thecoldweathercausedtheplantstodie.寒冷的天气使植物死亡。探究二核心单词·Thepolicehaven’tfoundoutthecauseoftheaccident.警察还没有查明事故的原因。·Youdon’thaveanycausetobelateforwork.你没有任何理由上班迟到。归纳拓展cause作动词，意为“使发生，造成，导致”，通常接名词或名词短语作宾语，表示某种结果；cause作名词，意为“原因；理由”。causesb.sth.给某人造成某物（通常指不好的结果）cause+宾语+不定式，促使/导致某人/某物做某事学会运用1:Smokingtoomuchmayclungcancer.学会运用2:Thec

oftheaccidentwasthedriver’scarelessness.学会表达3:大雨导致他们推迟了计划。Theheavyrain________them_______putofftheirplan.auseausecausedto2damage/'dæmɪdʒ/vt.

损害，毁坏n.损坏，损失；损害(教材P100)(观察)·Smokingcandamageyourhealth.吸烟会损害你的健康。·Thestormdamagedquiteafewhouses.暴风雨毁坏了相当多的房子。·Theearthquakecausedalotofdamagetothecity.地震给这座城市带来了巨大破坏。·Whatyousaidcausedgreatdamagetoher.你说的话对她伤害极大。归纳拓展damage既可以作动词，也可以作名词，意为“损害；毁坏；破坏”，可以指有形的物体损害，也可以指无形的损失，如财产或精神等。causedamagetosb./sth.对某人或某物造成损害学会运用4:Smokingseriously

_____________(damage)John’shealthandledtohisdeathatlast.学会表达5:树根会对你的房屋带来损害。Treerootsmay______________________________yourhouse.damagedcausedamageto1beworriedabout担心……(教材P100)(观察)·Sheisworriedabouthersonbecausehecamehomelate.她担心她的儿子，因为他回家晚了。·Thegirlwasworriedaboutseeinghernewteacher.那个女孩担心看到她的新老师。·Parentsalwaysworryabouttheirchildren.父母总是为自己的孩子担忧。·Sheisanxiousaboutherlessons.她对自己的课程感到焦虑。探究三核心短语归纳拓展beworriedabout是一个系表结构的短语，相当于一个及物动词词组，后面接名词或代词作宾语，表达对某事物或人的担忧或忧虑。about是介词，如果后面出现动词，要使用动名词形式。beworriedabout的同义短语是beanxiousabout“对……感到焦虑”，be动词要根据时态和主语变化形式。学会运用1:Whatsubjectareyou_________________(担心)

themostatschool?学会表达2:我担心我的考试成绩。I____________________myexamresults.学会表达3:老年人总是为他们的健康感到焦虑。Theold

__________

__________

__________

__________theirhealth.worriedaboutworryaboutarealwaysworriedabout2becauseof因为(教材P100)(观察)·Hedidn’tgotoschoolbecauseofhisillness.他因病没有去上学。·It’sallbecauseofwhatyousaid.那完全是因为你说的话。·Hewaslateforworkbecauseofhelpinganoldman.他因为帮助一位老人而上班迟到了。·IstayedathomebecauseIwastootired.我待在家里，因为我太累了。辨析:because与becauseofbecausebecause是连词，用于连接一个完整的句子，包括主语和谓语，表示原因。because

ofbecauseof是介词短语，后接名词、人称代词宾格或what从句，后面出现动词时要使用动名词形式。学会运用4:Wehadtostayathome

_______theheavyrainyesterday.A.becauseof B.infrontofC.inthemiddleof D.insteadof学会表达5:Theydidn’tgooutfora