1、Lesson 28The Study of Living ThingI.Learning aims:Master the new words:biology,butterfly,migrate,fantastic,completely,grandchild,female,milkweed,chemical,puzzlingII.Learning important and difficult points:both and biology butterflymigrate fantasticcompletely grandchild female milkweedchemical puzzli
2、ngNew WordsLanguage Points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：1.fantasticI think this is a fantastic invention.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：There are no chemicals in this kind of food.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：We can find chemical additives in many foods
3、.我们在很多食品中发现了化学添加剂。句中的have been drawing 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.Fantastic facts about the butterfly have been drawing Dr.Taylors attention.它往往与表示一段时间的时间状语连用，如：all the time,this month,all day,these few days
4、,for a year,since a week ago等。She has been playing basketball after school this week.这个星期她放学后一直打篮球。Tony has been drawing in his bedroom all the afternoon.托尼在卧室画了一下午。连词bothand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。Both Li Ping and her mother take exercise every morning.李萍和她妈妈每天早晨都进行锻炼。4.Th
5、is is both puzzling and interesting for many scientists.Exercises1.They gave us some good _(suggest)on our work.2.In order to get better _(educate),she went to study in Beijing.3.Who is the _(design)of this new machine?4.He was _(complete)wrong this time.5.My mother took some _(freeze)meat from the
6、fridge.frozenI.用括号中所给词语的适当形式填空。suggestionseducationdesignercompletely1.The teacher told me to pay attention _ my pronunciation.2.We are getting ready _ the work.Can we start now?3.Dr.Lee is interested _ studying the life of butterflies.4.I found a lot of useful information after looking _ the Internet.5.You must put more effort _ your work if you want to succeed.into II.用适当的介词填空。toforinonHomeworkPreview the next lesson.
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