人教版必修五unit1 第二課時(shí) 預(yù)習(xí)學(xué)案

1、Book5Unit1GreatScientists預(yù)習(xí)學(xué)案?jìng)湔n教師:徐小濤教研組長(zhǎng)審閱：________上課時(shí)間：2011826【學(xué)習(xí)目標(biāo)】1、了解著名醫(yī)生約翰斯諾、錢學(xué)森、哥白尼等科學(xué)家。2、學(xué)會(huì)使用表示描述人物的句型。3.學(xué)習(xí)過去分詞作定語和表語的結(jié)構(gòu)?！緦W(xué)習(xí)重點(diǎn)】了解著名醫(yī)生約翰斯諾、錢學(xué)森、哥白尼等科學(xué)家?！緦W(xué)習(xí)難點(diǎn)】學(xué)習(xí)過去分詞作定語和表語的結(jié)構(gòu)【學(xué)習(xí)過程】：1.Readthepassagenumbertheseeventsi

2、nthederthattheyhappened.JohnSnowbegantotesttwotheies.AnoutbreakofcholerahitLondonin1854.JohnSnowmarkedthedeathsonamap.Heannouncedthatthewatercarriedthedisease.JohnSnowinvestigatedtwostreetswheretheoutbreakwasverysevere.K

3、ingCholerawasdefeated.Hefoundthatmostofthedeathswerenearawaterpump.Hehadthehleremovedfromthewaterpump.2.Readthepassageanswerthesequestions.JohnSnowbelievedIdea2wasright.Howdidhefinallyproveit_____________________________

4、_______________________________________________DoyouthinkJohnSnowwouldhavesolvedthisproblemwithoutmapgiveareason.____________________________________________________________________________Cholerawasa19thcenturydisease.w

5、hatdiseasedoyouthinkissimilartocholeratodaywhy____________________________________________________________________________三句式點(diǎn)擊：1.WiththisextraevidenceJohnSnowwasabletoannouncewithcertaintythatpollutedwatercarriedtheviru

6、s.withthisextraevidence有了這個(gè)額外的證據(jù)；withcertainty肯定地，有把握地在句中作狀語，相當(dāng)于副詞.that引導(dǎo)賓語從句polluted過去分詞作定語翻譯：2.Somanythoussofterrifiedpeoplediedeverytimetherewasanoutbreak.terrified過去分詞作定語everytime短語充當(dāng)連詞作用，還有themomentminutesecondthefi

7、rstsecond…lasttimeimmediatelyinstantlydirectlye.g.:ThefirsttimeIwentabroadIcouldhardlyunderstwhatthefeignerssaid.ThemomentIsawhimIknewwhathadhappened.3.Itseemedthatthewaterwastoblame.be﹢動(dòng)詞不定式，可以表示該做或不該做的事。betoblame應(yīng)該負(fù)責(zé)；應(yīng)

8、受責(zé)備eg:Nooneistoleavethisbuildingwithoutthepermissionofthepolice.Youarenottolitterinthispark.公園里不許亂丟垃圾。翻譯：四語法分析：過去分詞作定語和表語課文原句：1.HefoundthatitcamefromtheriverpollutedbythedirtywaterfromLondon.2.Buthebecameinspiredwhenheth

9、oughtabouthelpingdinarypeopleexposedtocholera.過去分詞作定語：意義：過去分詞含有被動(dòng)和完成的意思，不及物動(dòng)詞的過去分詞只表示完成。abrokenheartaploughedfieldarisensun已升起的太陽位置：?jiǎn)蝹€(gè)的過去分詞作定語時(shí)，通常放在所修飾詞前；過去分詞短語作定語時(shí)，通常放在后面。pollutedwaterdeathcausedbytheaccidentabrokenglas

10、saglassbrokenbytheboy特別提示：有些詞像left剩下的given（所給的）concerned（有關(guān)的）等，習(xí)慣上作后置定語，如stingroomleftthepeopleconcerned有關(guān)人士thebookgiven所給的書籍當(dāng)所修飾的詞是由someanynothingnobody…所構(gòu)成的不定代詞或指示代詞those等時(shí)，通常放在其后。如：TherehasbeennothingchangedsinceIleft

11、Harbintwoyearsago.班級(jí)姓名等級(jí)區(qū)別：過去分詞作定語和現(xiàn)在分詞作定語1.語態(tài)不同：現(xiàn)在分詞表示主動(dòng)，過去分詞表被動(dòng).如surprisingnewssurprisedlistenersanexcitingmovieexcitedchildrenTheteachertoldhisstudentsalotofinterestingsties.SheisinterestedinChinese.2.時(shí)間關(guān)系上不同：現(xiàn)在分詞表動(dòng)作正

12、在進(jìn)行；過去分詞表動(dòng)作已經(jīng)完成。如thechangingwld正在發(fā)生變化的世界thechangedwld已經(jīng)改變了的世界boilingwaterboiledwaterdevelopingcountriesdevelopedcountries過去分詞作表語：意義：用在系動(dòng)詞后面，構(gòu)成系表結(jié)構(gòu)，表示主語所處的狀態(tài)。如shelookeddisappointed.wewereencouragedatthenews.用于被動(dòng)語態(tài)，表示主語所承受

13、的動(dòng)作。如thebookiswellwritten.thelakeisbadlypolluted.[課后練習(xí)]在課文中找出下列句子。1人們不知道它的病源，也不了解它的治療方法。___________________________________________________________2每次暴發(fā)霍亂時(shí)，都有大批驚恐的老百姓病死。___________________________________________________

14、__________3為防止這種情況再度發(fā)生，約翰斯諾建議所有水源都要經(jīng)過檢測(cè)。_________________________________________________________________________4.約翰、斯諾懷疑第二個(gè)理論是正確的但是他需要證據(jù)。_________________________________________________________________________5.他已經(jīng)顯示了

15、疾病是靠細(xì)菌傳播二不是靠空氣傳播的。______________________________________________________________________6.但當(dāng)他一想到要幫助（那些）受到霍亂威脅的普通百姓，他就感到振奮。________________________________________________________________________7.第二種看法是在吃飯時(shí)把這些病毒引入體內(nèi)的。___

16、______________________________________________________________________8.看來水是罪魁禍?zhǔn)住________________________________________________________________________9.在倫敦的里一個(gè)地區(qū)，她從兩個(gè)與寬街爆發(fā)的霍亂有關(guān)聯(lián)的死亡病例中又發(fā)現(xiàn)了有力證據(jù)。________________________