山西省吕梁市高中英语 Module 5 A Lesson in a Lab Reading精品课件 外研版必修1.ppt

外研版高一年级 必修1 module5 英语课件 reading whatcanyouseeinthesepictures b aim d method a result c conclusion c thestepsofascientificexperiment readthepassageasquicklyasyoucanandchoosethebesttitleforit thedifferentusesofmetalsthereactionofmetalsthereactionofmetalswithoxygen passagea thereactionofmetals aim apparatus methods result conclusion howdifferentmetalsreactwithwaterandoxygen 1 heatedinoxygen 2 putintowaterorsteam thereactionofmetals 1 itiseasytodoexperimentsinalab 在实验室里做实验很容易 2 itisnotsodifficulttostudyenglishwell 学好英语并不难 3 yourbooksareoutoforder youshouldputtheminorder 你的书太乱了 你应该把它们按顺序放好 4 yournameisatthetopofthelist 你的名字在名单的最前面 readthepassageagainandanswerthefollowingquestions 1 whichofthemetalsinthetablereactsthemostwithoxygenandwater potassium calciumandsodium 2 whathappenswhenyouheatcalciuminoxygen itburnstoformanoxide 3 whichmetalsreactwithsteam magnesium aluminiumandzinc 4 doesironhaveasloworfastreactionwithsteam ithasaslowreaction 5 doescopperreactwithwater no itdoesn t completethepassagewithproperwordsaccordingtopassagea metalsareveryimportant sowhenusingthemweshouldknowhowthey withdifferentsubstances takeironusedin equipmentforexample when inoxygen itwillreactslowly whenitisputtogetherwithwateror therewillbeapartial reaction react electrical heated steam readthepassageandfillinthechart passageb cottonwool water water nails water irondoesnotrust irondoesnotrust ironrusts 1 inthefirstpartoftheexperiment the isdry notwet 2 itshowsthatiron whentheairisdry 3 inthesecondpartoftheexperiment youmust thewatertomakesurethereisno init air doesnotrust boil air readthepassageagainandcompletethesentences 4 youadd tothewaterbecausethiskeeps outofit 5 itshowsthat doesnotrustinwaterthathasno init someoil air nail air completethepassagewithproperwordsaccordingtopassageaandb itishardtothinkofaworldwithoutmetals differentmetalshavedifferentuses forexample ironcanbeusedin equipment butaboveallweshouldknowwhetheritwill under electrical react differentconditions otherwiseitwillkeeptheequipmentfromworkingwell asweallknow ifironisheatedinoxygen itwillreactslowlybutwillnotforman oxide ontheotherhand ifitisputtogetherwithwateror therewillbea reaction nextlet sdoan tosupporttheabove first getatesttubefilledwithwaterandputitoverthe to forthreeminutes steam partial experiment bunsenburner boil thenputthreeorfourcleannailsinthewaterwithsomeoiladdedtoitandleavethetubeforoneweek whathappens theirondoesnot inair freewater anotherexperiment ifyouputthenailsinthetubewiththeairinitforoneweek thenwhathappens ironrustsin water rust ordinary 1 whenweusemetals itisimportanttoknowhowtheyreactwithdifferentsubstances forexample waterandoxygen whenweusemetals weshouldknowhowmetalsreactwithdifferentsubstances forexample waterandoxygen whichisveryimportant difficultsentences 本句是一个复合句 其中when引导时间状语从句 在主句中 it为形式主语 真正的主语是动词不定式短语toknow substances 其中how substances为how引导的宾语从句 作know的宾语 forexample引出同位语 表示举例 2 hereisatablewiththemetalsthatreactmostatthetop andthemetalsthatreactleastatthebottom atableishere atthetopofthetablewecanseethemetalsthatreactmostandatthebottomofthetablewecanseemetalsthatreactleast 本句使用了倒装语序 句子的主语是atable 后面的with bottom作定语修饰atable 两个that都引导定语从句修饰themetals 句意 这里有一个表格 反应最强烈的金属在最上面 反应最弱的在最下面 readaboutanincidentduringachemistrylessonandchoosethebestsummary readingonp93 astudentdidn tfollowtheinstructionscarefully hetookthewrongliquidfromthecupboardandnearlypoisonedtheclass 2 thechemistryteacherwasdemonstratinganexperimentwhensheheatedapoisonousliquid therewassomuchsmokethatthestudentshadtoleavetheroom 3 astudentwasdoingachemistryexperimentwhenheaccidentallyheatedthewrongliquidandcausedanincidentinthelaboratory readthepassageagainandanswerthequestions 1 whatsubstancesweretheyusing bakingsodaandhydrochloricacid 2 whatsubstanceswerethestudentsmaking salt 3 howcantheymakethereactionquicker bymakingthemixturehotter 4 whatmistakesdidpaulmake heusedthewrongliquid 5 whydidhemakethemistake becausetherewasnolabelonthebottle 6 whathappenedwhenpaulheatedtheliquid itformedathickcloudofwhitegas 7 whydidtheteachersendthestudentsoutoftheroom becauseth