1、Lesson 28,Unit 5 Look into Science,5,Unit,Lesson 28 The Study of Living Things,学习目标,objectives,To learn some new words: biology，fantastic, butterflyTo understand the passage.To learn Attributive clause.,Lead in,1.Would you like to be a biologist when you grow up? Why or why not?2.What mysteries of n
2、ature do you know 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 adj. completely adv. grandchild n. female n. milkweed n. chemical n. puzzling adj.,Words,Pre-reading,1.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 o
3、nes attention,Useful expressions:,return to,as many as,lay eggs,at a university,small piece of forest,leave for,While-reading,1. 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,
4、 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.,F,Yes, they do,He studies one kind of North American butterfly,230 million,在墨西哥，这种蝴蝶总是回到仅有20千米宽的同一小片
5、森林。,T,1. 有关attention的短语 2. asas 的用法 3. lie 与 lay的用法 fantastic chemical have been drawing,Language Points,attention,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 h
6、omework _ my sister does.(像一样认真) 3. They see _ one hundred students in front of the library. (像一样多),as tall as,as carefully as,as many as,lie 与 lay,The hens _ (lay) eggs every day. Have you ever _ (lie) to your parents?,lay,lied,lay (下蛋) - laid - laid - laying lie (说谎) - lied - lied - lying lie (平躺)
7、 - 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. fantastic,I 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。,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 man
8、y 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 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, for a year, since a week
9、 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 most fascinating thing in nature?,Post-reading,Discussion,Are you familiar with these sentences?They are from the books we have l
10、earned.,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 butte
11、rflies 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,Grammar,定语从句是指在句中作定语的_。先行词是被定语从句所修饰的词 （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
12、句,主语,宾语,宾语,who,that,that,which,定语从句,Attributive Clauses,The 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,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, mu
13、ch 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who/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
14、 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.,that,that/which,that/which,that/who,that/which,that/who,7. I am sure she has something _ you can borrow. 8. Ive read all th
15、e 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.,that,that,that,that,that,Finish the exercise on P73, 2,Practice,1.To grasp the contents of this lesson. 2.Preview Lesson 29.,Homework,Homework,