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1、21stCenturyTeensToYouyou屠呦呦屠呦呦bacteriabktr细菌细菌bacteriumvirusvars病毒病毒parasiteprsat寄生虫寄生虫malariamler疟疾疟疾herbalextractkstrkt草药提取草药提取sweetwormwood艾草属植物艾草属植物ingredientngrdnt成分成分artemisinin青蒿素青蒿素etheri乙醚乙醚reducesuffering减轻痛苦减轻痛苦21stCenturyTeensSaved by Mom for Senior 121stCenturyTeensI.Pre-readingHaveyoue
2、verbeenindangerwhenswimming?21stCenturyTeens1.Whathappenedtotheboywhenhewasswimming?Analligatorlgetattackedhim.2.Howdidhismomsavehim?Hismothergrabbedherlittleboybythearms.3.Whatarethetwokindsofscarsinlife?Oneisuglyandhascausedusdeepregret.Theotherisbecausesomeonehasrefusedtoletgo.21stCenturyTeensIII
3、.VocabularyLookatsomesentencesandtrytofigureoutthemeaningsoftheunderlinedparts.Fromthedock,themothergrabbedherlittleboydock:码头码头grab:抓住抓住Afarmerhappenedtodriveby.恰巧恰巧begananincredible难以置信的难以置信的tug-of-war拔河拔河letgo放开放开hangonto紧紧抓住；紧握紧紧抓住；紧握hangout闲逛闲逛,和和-在一起在一起21stCenturyTeensIV.Structurepayattentiont
4、othestructure.themothergrabbedherlittleboybythearms.“动词+sb.+介词+the+身体某一部位”中要用thetakesb.bythearm抓住某人的手臂hitsb.intheface打某人的脸hitsb.onthehead打某人的头patsb.ontheshoulder拍某人的肩膀21stCenturyTeensIV.Structureonhisarmswerescratches倒装句。作状语的介词短语引起倒装句Underthebigtreesatanoldfarmer.Onthegroundweresomeairconditioners,whichweretobeshippedtosomeothercities.