Unit5Signs語法梳理：情態動詞should精講精練(含答案)情態動詞shouldshould為情態動詞，意為“應當，應當”，沒有人稱和單復數的變化，后面接動詞原形。確定句結構:主語+should+動詞原形+其他.例：WeshouldprotectourEarth.我們應當愛護我們的地球。否定句結構:主語+shouldn't+動詞原形+其他.例：Youshouldn'teatinthelibrary.你不應當在圖書館里吃東西。(與Don'teatinthelibrary.意思相近,但以Don't開頭的否定祈使句語氣更猛烈)一般疑問句結構：Should+主語+動詞原形+其他?例：Shouldhedothis?他應當做這件事嗎?特殊疑問句結構：特殊疑問詞+should+主語+動詞原形+其他?例：WhatshouldwedotoprotectourEarth?我們應當做什么來愛護我們的地球?Whyshouldpeoplesavewater?人們為什么應當節省用水?【考題精練】一、用所給單詞的適當形式填空。1.Thereisn'tmuchwateronourEarth.We(should)(waste)water.We(should)(reuse)it.2.Theflooriswet.You(should)(are)careful.3.Lookattheman.Heis(smoke).Heshouldn't(smoke)here.4.Bobbyalways(throw)banana(skin)ontheground.He(should)(put)theminthebin.5.(save)energy,weshouldn’t(drive)toomuch.6.Thebus(come).Weshould(stand)inlineandwait.二、按要求完成句子。1.Weshouldmovesomefactoriesawayfromourcity.①改為否定句②對畫線部分提問2.Tomshouldusetoomanyplasticbags.①改為否定句②改為一般疑問句③對畫線部分提問三、看圖，完成對話。1.Mike:Lookthatsignoverthere.itmean?SuHai:Ityoucan’there.Mike:Oh,Isee.2.Tom:Dad,theoverthere“D”?Dad:No,it.Itmeanspeoplecan'there.Tom:Oh,Isee.3.Tim:CanImydogtherestaurant?Waitress:No,you.Lookatthesign.Itmeans“pets”.Tim:OK.I'msorry.四、閱讀理解。ItisSaturdayafternoon.LiuTaoandhisfriendDavidaretakingawalkinthepark.Therearemanypublicsignsinit.Theymeandifferentthings.LiuTaoknowsalotaboutthem.Suddenly,theyseeashortmanwalkingonthegrass.LiuTaopointsatthesignonthegrassandsaystohim,“Sir,lookatthesign!Youcan’twalkonthegrass.”Themansmilesandsays,“Youareright,youngman.ButI'mtheparkkeeper.I'mlookingafterthegrass.”閱讀短文,推斷正(T)誤(F)。()1.LiuTaoandDavidaretakingawalkonthegrass.()2.Theboyscanseemanypublicsignsinthepark.()3.LiuTaoknowsalotaboutthepublicsigns.()4.Theshortmancan'tseethepublicsignsinthepark.()5.Theshortmanworksinthepark.參考答案一、1.shouldn’twaste;shouldreuse解析:句意:我們地球上的水資源不多了，我們不應當鋪張水,我們要重復利用水。2.shouldbe解析：should后面使用動詞原形，故填shouldbe。3.smoking;smoke解析:第一空為現在進行時態,is后面接動詞ing形式,情態動詞should后面接動詞原形。4.throws;skins;shouldput解析：依據“always”可知,句子應使用一般現在時,香蕉皮為bananaskin,skin作為果皮時為可數名詞。5.Tosave;drive解析:動詞不定式作目的狀語6.iscoming;stand解析:第一空iscoming表示公共汽車就要來了。其次空,表示“我們應當排隊”,should后用動詞原形stand.二、1.①Weshouldn’tmoveanyfactoriesawayfromourcity.②Whatshouldyoudo?2.①Tomshouldn’tusetoomanyplasticbags.②ShouldTomusetoomanyplasticbags?③WhatshouldTomuse?三、l.at,Whatdoes,means,eatordrink2.does,sign,mean,Danger,doesn't,smoke3.take,into,can't,No四、1.F解析:通讀全文可知,LiuTao知道很多公共標識的意思，也告知他人不行以踐踏草地，由此推斷，他和David并不是在草地上閑逛?????。故填F。2.T解析:由“Therearemanypublicsignsinit.”可知，他們可以在公園觀察很多公共標識。故填T。3.T解析:由“LiuTaoknowsalotaboutthem.”可知,LiuTao格外了解這些標識。故填T。4.F解析:由“Themansmilesandsays,‘Youareright,y