九年级英语上册 Unit 5 Lesson 28 The Study of Living Things课件 （新版）冀教版.ppt

thestudyoflivingthing lesson28 i learningaims masterthenewwords biology butterfly migrate fantastic completely grandchild female milkweed chemical puzzling ii learningimportantanddifficultpoints both and biologybutterflymigratefantasticcompletelygrandchildfemalemilkweedchemicalpuzzling newwords whatdoyoudo 1 puteightspoonfulsofcornstarchintothebowl 2 addfourtofivespoonfulsofwater 3 mixthecornstarchandwatertogether 4 pourthemudintoyourhand 5 openandcloseyourhand mix whatishappening somethingsdissolveinwater sugardissolvesinwater saltdissolvesinwater butnotcornstarch itonlymixeswithwater whenyoucloseyourhandandpress someofthewatergetsout themudbecomessolid whenyouopenyourhand thewatermixesinagain nowitisaliquid whatelsecanyoudo putsomeofthemudinabowl nowhitthemudwithyouropenhand whathappens nowdothesamethingwithwater arethemudandwaterthesamewhenyouhitthem languagepoints 作形容词 意为 奇异的 极好的 了不起的 在句中作定语或表语 如 fantastic ithinkthisisafantasticinvention 我想这是一个了不起的发明 作可数名词 意为 化学物质 化学制品 复数形式是chemicals 如 therearenochemicalsinthiskindoffood 这种食品中没有化学物质 2 chemical 作形容词 意为 化学的 化学作用的 在句中作表语或定语 如 wecanfindchemicaladditivesinmanyfoods 我们在很多食品中发现了化学添加剂 句中的havebeendrawing是现在完成进行时 它由 助动词have has been 现在分词 构成 当主语是第三人称单数时用助动词has 其他情况用助动词have 现在完成进行时主要表示从过去开始一直持续到现在的动作 这个动作是否延续下去 要根据上下文而定 3 fantasticfactsaboutthebutterflyhavebeendrawingdr taylor sattention 它往往与表示一段时间的时间状语连用 如 allthetime thismonth allday thesefewdays forayear sinceaweekago等 shehasbeenplayingbasketballafterschoolthisweek 这个星期她放学后一直打篮球 tonyhasbeendrawinginhisbedroomalltheafternoon 托尼在卧室画了一下午 连词both and 的意思是 和 都 既 也 它可以连接句中句子成分相同的词语 如果用它连接主语时 谓语动词要用复数形式 bothlipingandhermothertakeexerciseeverymorning 李萍和她妈妈每天早晨都进行锻炼 4 thisisbothpuzzlingandinterestingformanyscientists exercises 1 theygaveussomegood suggest onourwork 2 inordertogetbetter educate shewenttostudyinbeijing 3 whoisthe design ofthisnewmachine 4 hewas complete wrongthistime 5 mymothertooksome freeze meatfromthefridge frozen i 用括号中所给词语的适当形式填空 suggestions education designer completely 1 theteachertoldmetopatattention mypronunciation 2 wearegettingready thework canwestartnow 3 dr leeisinterested studyingthelifeofbutterflies 4 ifoundalotofusefulinformationafterlooking theint