冀教版九年級(jí)上冊英語 Look into Science The Study of Living Things 教學(xué)設(shè)計(jì)

Lesson28:TheStudyofLivingThingsLearningaims:Masterthenewwords:ChipTaylor,biology,butterfly,migrate,fantastic,completely,grandchild,female,milkweed,chemical,puzzlingLearningimportantanddifficultpoints:FantasticfactsaboutthebutterflyhavebeendrawingDr.Taylor,sattention.Here,asmanyas230millionbutterfliesspendthewinter.ButinMexico,peoplecutdownthetreesthatthebutterfliesneedtorestonbecausetheywantmorelandforfarming.Thisisbothpuzzlingandinterestingformanyscientists.LanguagePoints:fantastic【用法】作形容詞，意為“奇異的、極好的、了不起的”，在句中作定語或表語?！九e例】①Ithinkthisisafantasticinvention.我想這是一個(gè)了不起的發(fā)明。②Theseflowersaresofantastic.Theyhavemanydifferentcolours.這種花太奇異了。它們有很多不同的顏色。chemical【用法】作可數(shù)名詞，意為“化學(xué)物質(zhì)、化學(xué)制品”，復(fù)數(shù)形式是chemicalso【舉例】Therearenochemicalsinthiskindoffood.這種食品中沒有化學(xué)物質(zhì)。【用法】作形容詞，意為“化學(xué)的、化學(xué)作用的”，在句中作表語或定語?！九e例】Wecanfindchemicaladditivesinmanyfoods.我們在很多食品中發(fā)現(xiàn)了化學(xué)添加劑。FantasticfactsaboutthebutterflyhavebeendrawingDr.Taylor,sattention.這些有關(guān)蝴蝶的奇異的事實(shí)引起了泰勒先生的注忌、。【用法】句中的havebeendrawing是現(xiàn)在完成進(jìn)行時(shí)，它由“助動(dòng)詞have(has)+been+現(xiàn)在分詞”構(gòu)成，當(dāng)主語是第三人稱單數(shù)時(shí)用助動(dòng)詞has,其他情況用助動(dòng)詞have?，F(xiàn)在完成進(jìn)行時(shí)主要表示從過去開始一直持續(xù)到現(xiàn)在的動(dòng)作，這個(gè)動(dòng)作是否延續(xù)下去，要根據(jù)上下文而定。它往往與表示一段時(shí)間的時(shí)間狀語連用，如：allthetime,thismonth,allday,thesefewdays,forayear,sinceaweekago等?！九e例】①Shehasbeenplayingbasketballafterschoolthisweek.這個(gè)星期她放學(xué)后一直打籃球。②Tonyhasbeendrawinginhisbedroomalltheafternoon.托尼在臥室畫了一下午。Thisisbothpuzzlingandinterestingformanyscientists.對很多科學(xué)家來說這既令人費(fèi)解又很有趣?！居梅ā窟B詞both…and…的意思是“……和……都，既……也……”，它可以連接句中句子成分相同的詞語，如果用它連接主語時(shí),謂語動(dòng)詞要用復(fù)數(shù)形式。【舉例】①Shelikesbothsport