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Lesson 28Unit 5 Look into Science5学习目标学习目标objectivesobjectivesTo learn some new words:biology，fantastic, butterflyTo understand the passage.To learn Attributive clause.Lead inLead in1.Would you like to be a biologist when you grow up? Why or why not?2.What mysteries of nature do you know about?Think about it生物生物蝴蝶蝴蝶迁徙迁徙; 移居移居奇异的奇异的完全地完全地孙子孙子(女女)；外孙；外孙(女女)雌性雌性马利筋（一种植物）马利筋（一种植物）化学物质化学物质令人费解的令人费解的biology n. butterfly n.migrate v.fantastic pletely adv.grandchild n.female n. milkweed n.chemical n.puzzling adj.WordsPre-readingPre-reading1.引起某人的注意引起某人的注意2.回到、返回回到、返回3.多达多达4.下蛋下蛋5.在大学里在大学里6.小片的森林小片的森林7.动身去某地动身去某地 draw ones attention Useful expressions:return toas many aslay eggsat a universitysmall piece of forestleave for While-readingWhile-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 always 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。千米宽的同一小片森林。T1. 有关有关attention的短语的短语2. asas 的用法的用法3. lie 与与 lay的用法的用法4.fantastic5.chemical6.have been drawingLanguage PointsATTENTION1. draw ones attention to sth. (使某人注意某事使某人注意某事).2. catch ones attention (引起某人注意引起某人注意)3. pay attention to sth. (注意、留心注意、留心) 4. give ones attention to sth. (关心关心)ASAS 1. He is _ his father.(像像一样高一样高) 2. I do my homework _ my sister does.(像像一样认真一样认真) 3. They see _ one hundred students in front of the library. (像像一样多一样多)as tall asas carefully asas many asLIE 与与 LAYThe hens _ (lay) eggs every day.Have you ever _ (lie) to your parents?layliedlay (下蛋下蛋) - laid - laid - layinglie (说谎说谎) - lied - lied - lyinglie (平躺平躺) - lay - lain - lying作形容词，意为作形容词，意为“奇异的、极好的、了不起奇异的、极好的、了不起的的”，在句中作定语或表语。如：，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。我想这是一个了不起的发明。作可数名词，意为作可数名词，意为“化学物质、化学制品化学物质、化学制品”，复，复数形式是数形式是chemicals。如：。如：There are no chemicals in this kind of food. 这种食品中没有化学物质。这种食品中没有化学物质。5. chemical作形容词，意为作形容词，意为“化学的、化学作用的化学的、化学作用的”，在句中，在句中作表语或定语。如：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。我们在很多食品中发现了化学添加剂。句中的句中的have been drawing 是现在完成进行时，它是现在完成进行时，它由由“助动词助动词 have (has) + been + 现在分词现在分词”构成，构成，当主语是第三人称单数时用助动词当主语是第三人称单数时用助动词has，其他情况，其他情况用助动词用助动词have。6. 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：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。等。She has been playing basketball after school this week. 这个星期她放学后一直打篮球。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。托尼在卧室画了一下午。WHAT DO YOU THINK IS THE MOST FASCINATING THING IN NATURE?Post-readingPost-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-great 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 定语从句定语从句是指在句中作定语的是指在句中作定语的_。先行词先行词是被定是被定语从句所修饰的词语从句所修饰的词 （通常是名词或代词）。（通常是名词或代词）。关系词关系词，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，通常是中充当一定的成分，通常是_或或_，作，作_时常可以省略。时常可以省略。先行词为人时先行词为人时，引导词常用，引导词常用_或或_；先行词为物时先行词为物时，引导词常用，引导词常用_或或_。从句从句主语主语宾语宾语宾语宾语whothatthatwhich定语从句定语从句Attributive ClausesThe boy who is wearing a black coat bought an iPod yesterday.The experiments that we did yesterday were fantastic. 主语主语定语从句定语从句定语从句定语从句主语主语修饰修饰the boy修饰修饰 experiments关系词的用法关系词的用法先行词先行词在从句中作在从句中作主语主语在从句中作宾在从句中作宾语语在从句中在从句中作定语作定语指代人指代人who/thatwhom/who/thatwhose指代物指代物which/that which/thatwhose/ of which特殊情况下，由特殊情况下，由that引导的定语从句：引导的定语从句：1.先行词为先行词为all, everything, nothing, something, anything, little, much 等不定代词时。等不定代词时。2. 先行词被先行词被all, little, much, every, no 等修饰时。等修饰时。3. 先行词被序数词或最高级修饰时。先行词被序数词或最高级修饰时。4. 先行词被先行词被the only, the very, the same, the last 修饰时。修饰时。5. 先行词为人和物的组合。先行词为人和物的组合。6. 主句是主句是who/which开头的特殊疑问句。开头的特殊疑问句。请给下列的定语从句补充引导词。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 _ 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, 2PracticePractice1.To grasp the contents of this lesson.2.Preview Lesson 29.HomeworkHomework
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