1、Lesson 28Unit 5 Look into Science5Lesson 28 The Study of Living Things学习目标objectivesTo learn some new words:biology，fantastic,butterflyTo understand the passage.To learn Attributive clause.Lead in1.Would you like to be a biologist when you grow up?Why or why not?2.What mysteries of nature do you kno
2、w about?Think about it生物蝴蝶迁徙;移居奇异的完全地孙子(女)；外孙(女)雌性马利筋（一种植物）化学物质令人费解的biology n.butterfly n.migrate v.fantastic pletely adv.grandchild n.female n.milkweed n.chemical n.puzzling adj.WordsPre-reading1.引起某人的注意2.回到、返回3.多达4.下蛋5.在大学里6.小片的森林7.动身去某地draw ones attention Useful expressions:return toas many aslay
3、 eggsat a universitysmall piece of forestleave for While-reading1.In the United States and Mexico,farmers use chemicals that kill milkweed.2.Do the females lay eggs on only one plant?_.3.What does Dr.Chip Taylor study?_.4.Here,as many as _ butterflies spend the winter.5.In Mexico,the butterflies alw
4、ays return to the same small piece of forest,which is only 20 kilometers wide._Read the lesson and finish the exercise.FYes,they doHe studies one kind of North American butterfly230 million在墨西哥，这种蝴蝶总是回到仅有20千米宽的同一小片森林。T 1.有关attention的短语2.asas 的用法3.lie 与 lay的用法4.fantastic5.chemical6.have been drawingL
5、anguage Pointsattention1.draw ones attention to sth.(使某人注意某事).2.catch ones attention (引起某人注意)3.pay attention to sth.(注意、留心)4.give ones attention to sth.(关心)asas 1.He is _ his father.(像一样高)2.I do my homework _ my sister does.(像一样认真)3.They see _ one hundred students in front of the library.(像一样多)as ta
6、ll asas carefully asas many aslie 与 layThe hens _(lay)eggs every day.Have you ever _(lie)to your parents?layliedlay(下蛋)-laid-laid-layinglie(说谎)-lied-lied-lyinglie(平躺)-lay-lain-lying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：4.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
7、式是chemicals。如：There are no chemicals in this kind of food.这种食品中没有化学物质。5.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.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。6.Fantastic facts about the butterf
8、ly 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,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。What do you think is the mo
9、st fascinating thing in nature?Post-readingDiscussion Are you familiar with these sentences?They are from the books we have learned.1.In Mexico,the butterflies always return to the same small piece of forest,which is only 20 kilometres wide.2.The butterflies that return to the south are the great-gr
10、eat grandchildren of the butterflies that left for the north.3.But in Mexico,people cut down the trees that the butterflies need to rest on because they want more land for farming.4.In the United States and Canada,farmers use chemicals that kill milkweed.Attributive Clause定语从句定语从句是指在句中作定语的_。先行词是被定语从
11、句所修饰的词（通常是名词或代词）。关系词，也叫作引导词，是在从句中替代先行词，在定语从句中充当一定的成分，通常是_或_，作_时常可以省略。先行词为人时，引导词常用_或_；先行词为物时，引导词常用_或_。从句主语宾语宾语whothatthatwhich定语从句Attributive ClausesThe boy who is wearing a black coat bought an iPod yesterday.The experiments that we did yesterday were fantastic.主语定语从句定语从句主语修饰the boy修饰 experiments关系词
12、的用法先行词在从句中作主语在从句中作宾语在从句中作定语指代人who/thatwhom/who/thatwhose指代物which/that which/thatwhose/of which关系词特殊情况下，由that引导的定语从句：1.先行词为all,everything,nothing,something,anything,little,much 等不定代词时。2.先行词被all,little,much,every,no 等修饰时。3.先行词被序数词或最高级修饰时。4.先行词被the only,the very,the same,the last修饰时。5.先行词为人和物的组合。6.主句是w
13、ho/which开头的特殊疑问句。请给下列的定语从句补充引导词。1.Who is the girl _ talked to you yesterday.2.Look at the photos _ I took on my trip.3.It successfully shows the rich culture_ makes Beijing so famous.4.The photo_ we liked best was taken by Zhao Min.5.His father is the person_ will be most unhappy.6.Tom is the boy _
14、we saw in the shop.thatthat/whichthat/whichthat/whothat/whichthat/who7.I am sure she has something _ you can borrow.8.Ive read all the books _ are not mine.9.This is the first book_ he has read.10.This is the very book _ belongs to him.11.They talked for an hour of things and persons _they remembered in the school.thatthatthatthatthatFinish the exercise on P73,2Practice1.To grasp the contents of this lesson.2.Preview Lesson 29.HomeworkHomework
