★思維導(dǎo)圖★語法：it的用法it作形式主語的用法：代詞it可以用來代替一個名詞、一個短語、一個句子，在句中作主語或賓語。1.it作主語指時間、日期、天氣、距離和氣溫等。It’snineo’clocknow.（指時間）Itismuchcolderthanitwasyesterday.（指天氣）Itisabout5kilometersfromheretomyhome.（指距離）Itisveryhotintheclassroom.（指氣溫）2.It作形式主語代替動詞不定式，常用于以下句型中：①itis/wasadj.(of/for)sb.todosth.當表語是與事物的特征有關(guān)的形容詞時，如easy,difficult,hard,important,necessary等，用介詞for.例如：ItisdifficultforLucytolearnphysics.Itisinterestingforustoplaybadminton.當表語是描述人的性格、品質(zhì)的形容詞時，如kind,nice,polite,clever,foolish,stupid等，用介詞of.例如：Itiskindofyoutohelpme.②ittakes/tooksb.sometimetodosth.例如：Ittakeshimanhourtodohishomeworkeveryday.③itis/wasn.todosth.例如：Itisgreatfuntohaveapartyhere.3.it作形式主語還常用于句型“itseems/appearsthat+從句”，表示“似乎/好像/看來......”例如：Itseemsthatheknowseverything.Itappearsthatwearewrong.★鞏固提升一、單項填空1.Manycitieswould__________anddisappear.A.befloodedB.floodC.floodingD.wasflooded2.Whatwouldhappenourcitywas________flooded.A.badB.badlyC.goodD.well3.Wouldanyoneremain___________A.livingB.liveC.aliveD.tolive4.I_________aboutagreatflood.A.todreamB.dreamC.dreamingD.dreamt5.Itriedtocallmydad,butthelinewas_______.A.deadB.dieC.dyingD.death6.It'simportant________withit.A.stickB.tostickC.stickingD.sticked7.Ihavenotime________abouttheflood.A.thoughtB.thinkingC.tothinkD.thinking8.Butmycries_______ondeafearsyesterday.A.fallingB.fallC.tofallD.fell9.It_______ontotheirdesksandcoveredtheircomputers.A.pouredB.pouringC.pourD.topour10.ThenI_______.Therewasnowater.A.wakeB.awokeC.towakeD.woken11._________isoneo'clock.A.ThisB.ThetimeC.ItD.That12._______iswrongtopaynoattentiontoKevin.A.ThatB.ItsC.ThisD.It13.Ittookalongtime_________thehouse.A.tobuildB.buildC.buildingD.built14.It_______thatnobodyispayinganyattentiontotheflood.A.seemedB.seemsC.toseemD.seem15._______aroundandworryaboutthefloodisnotagoodidea'A.SitB.SittingC.TositD.sat答案:1—5ABCDA6—10BCDAB11—15CDABC二、綜合閱讀閱讀短文，然后按要求完成第1—5小題。ItwasaSundaymorninginDecember,anditwasverycold.Lindagotupat6:30inthemorning.Itwasstilldarkoutside.Afterbreakfast,shetookthebustotherailwaystation.Thesuncameout,anditgotwarmer.Lindalookedatherwatch,andshebecame(A)____.Itwasalongwayfromherhometothestation.(E)Itwasnecessarytoarriveatthestationbefore8o’clock.Otherwise,shecouldnot(B)_____thetraintothesmallvillage.Thechildrenthere(F)正在等她.Lindawasamiddleschoolteacherinacity.Shestartedtoteachinavillageschoolfarawayfromhercityattheweekendtwoyearsago.Itwas(C)difficultto(G)keeponteachingforsuchalongtime.ButLindasaiditwasfuntoteachthoselovelychildren.Ataquartertoeight,Linda(D)reachedthestation.Shegotonthetrainat8:10.Itwassunny.Shewouldspendanotherwonderfulweekendwiththechildren.1.在A和B處填入適當單詞（A）____（B）_____2.同義詞語（C）______(D)______3.文中劃線部分（E）指代的是：_____________4.將文中劃線部分（F）譯成英語：_____________________5.將文中劃線部分（E）改寫為：_____teaching參考答案：1.worried,catch2.hard,gotto3.toarriveatthestation4.werewaitingforher5.continue三、回答問題閱讀短文，然后根據(jù)內(nèi)容回答所提問題。Oneofthegreatestnaturaldisasterinhistorywastheeruptionofkrakatoain1883.KrakatoaisasmallislandinIndonesia.Noonelivedontheisland.However,Krakatoaisbetweenlargeislandswhichbothhavelargecitiesandmanypeople.Theislandhadthreevolcanoesonit.On20May1883,smokebegancomingoutofthesmallestofthesevolcanoes.TheeruptionsfromthisvolcanoandtheothervolcanoclosebycloudbeheardinthecityofJakarta,about90kilometresaway.Thesevolcanoescontinuedtoshowactivityonandoffforthenextthreemonths.However,thelargestvolcanoontheislandhadalargeeruption.Thiscausedatsunamiover30metreshigh,whichhittheislandsnearKrakatoaandkilledmanypeople.However,theworstwasyettocome.Aboutfortyminutesafterthiseruption,therewasalandslideonRakata.ThiscausedthesuddeneruptionofRakata.Itwasoneofthelargesteruptionsinthehistoryoftheworld,andresultedintsunamismorethan46metreshigh.TheeruptionwassogreatthatitevencausedthewatertomoveintheEnglishChannelontheothersideoftheEarth,andtheislandofKrakatoaisnowlessthanathirdofitssizebeforetheeruption.Itisthoughtthattherewerebetween35000and150000deathscausedbytheeruptionsandtsunamis,butnooneknowsforsurehowmanypeopledied.ThevolcanopouredsomuchsmokeintotheairthatairtemperaturesaroundtheEarthdroppedbymorethanonedegreeforthenextseveralyears,andmanycountriesaroundtheworlddidnothaveasummertimeinthefollowingyear.1.WhereisKrakatoa?2.HowfarawaycouldtheeruptionsonKrakatoabeheard?3.Whatwastheworstresultofthesmallervolcano’seruptionon27August