外研版 (2019)必修 第一册Unit 5 Into the wild集体备课课件ppt

这是一份外研版 (2019)必修 第一册Unit 5 Into the wild集体备课课件ppt，共28页。PPT课件主要包含了小试牛刀等内容，欢迎下载使用。

Pre-reading
What des the vide mainly talk abut?It talks abut mnarch butterflies’ amazing migratin t Mexic.
Watch and think:
D yu knw the names f these animals?
mnarch butterfly
Siberian crane
Atlantic salmn
killer whale
African lin
Lk and chse the animals that migrate.
What d yu knw abut animal migratin?
Animals that migrateTime f animal migratinReasns fr animal migratinInfluences f human activities n animal migratin
animal migratin
While-reading
What is the main idea f the passage? A. The mnarch’s migratin. B. The reasns fr mnarch’s migratin. C. Mexic’s mnarch.
The main idea f a passage can be fund frm its title, the tpic sentence, r even the pictures.
Read the passage in the textbk (P50-51)and find ut what mystery the scientists have slved.
The scientists have slved the mystery f hw mnarch butterflies manage t travel a lng distance and find their way t their destinatin.
Chse where yu are mst likely t find the passage.
1 In a scientific research paper abut the mnarch butterfly’s migratin.2 In a ppular nature magazine intrducing the mnarch butterfly.3 In a travel leaflet encuraging peple t visit Nrth America.
Read the passage carefully and d Activity 4.
a. The mnarch butterfly is able t tell___________ ________.b. Using these tw pieces f infrmatin, the mnarch butterfly determines _____________.c. The mnarch butterfly measures _____________ _______with its eyes.d. The mnarch butterfly reaches _______________ ____________________.
the time f
the way t g
the psitin f
the places where
it will spend the winter
e. Humans _________ trees.f. The ________________________________ where mnarchs can be fund is destryed.g. Humans use chemicals that ____________ that mnarch caterpillars eat.h. The mnarch butterfly’s ppulatin __________ _________________________ in the last few years.
natural envirnment f many places
kill the plants
has crashed
(by as much as 90 per cent)
After-reading
Think and share:
What impresses yu mst abut the mnarch butterfly?
It said, “Its ppulatin has crashed by as much as 90 per cent in the last few years” in the text. This gave me a huge shck. It’s high time that we shuld think ver abut the cause and take measures.
What can peple d t help prtect the mnarch butterfly?
Plant native milkweed species t feed n D nt use chemicals that kill the plants as much as pssiblePrtect the natural envirnment
Language pints
1. migrate:(f an animal, typically a bird r fish) mve frm ne regin r habitat t anther accrding t the seasns. v. 迁徙 migratin n. 迁移 migrant n. 候鸟；移居者
例：秋天来了，鸟儿往南飞了。
As autumn arrives, the birds _______ suth.
They migrate t find fd, seek a partner, r in search f warmer weather.
句意：动物为了觅食、寻找配偶或温暖的环境而迁徙。
2. in search f : 搜寻，寻找
例：他们去澳大利亚淘金。They went ut t Australia __________ gld．
We are in search f a typist． 我们在招聘一名打字员。The prspecting team traversed far and wide in search f mineral depsits． 地质勘探队为寻找矿藏走遍四面八方。
in search f
该句中that指代the migratin, that用来指代前面提到的内容，可以指代名词单数或者不可数名词。
例：我电脑的显示器比我爸电脑的显示器好。The mnitr f my cmputer is better than ____ f my dad’s.
One f the mst wnderful migratins in nature is that f the Nrth American mnarch butterfly.
句意：自然界最为壮观的迁徙之一就是北美洲黑脉金斑蝶的迁徙。
The ppulatin f China is larger than that f the UK.中国的人口数量比英国多。
1. manage: If yu manage t d smething, especially smething difficult, yu succeed in ding it. v. 设法做到
例： 我无法知道他是如何找到我们的。Hw he _________________ us is beynd us.
Smehw they managed t travel arund 4,000 kilmeters suth and find their way t Califrnia r Mexic.
句意：无论怎样，它们总是能够完成约4000公里的南行旅程，成功到达加利福尼亚州或墨西哥。
managed t find
2. find ne’s way: (因自然或环境的力量)来到某处；流入、进入；找到解决办法；推开人群挤过去（=push ne’s way）；找到路（反义词为：lse ne’s way）。
例：那条河流入大海。The river ___________ t the sea.
finds its way
1. determine: firmly decide. v.决定 determinatin n. 决心、果断
例： 他并不比她有更大的权力来决定他们的钱该怎么花。He has n greater right than her t __________ hw their mney shuld be spent.
These tw pieces f infrmatin—the time f day and the pint where the sun is in the sky—allws the butterfly t determine the way t g.
句意：这两条信息——一天中的时刻和太阳在天空中的位置——让黑脉金斑蝶能够判定前进方向，最终成功抵达过冬的地点。
2. allw sb t d sth 允许某人做某事 allw fr sth 斟酌[情形等] ,考虑,体谅
After sme hesitatin, he agreed t allw me t take the curse. 稍稍犹豫之后，他同意让我修这门课。We must allw fr delays caused by bad weather. 我们必须考虑到因坏天气所造成的延误。
crash: a ppulatin crash is a decline in the number f individual members in a ppulatin, species r grup f rganisms. v. 锐减crash int 闯入；撞到……上a plane crash 飞机失事（n. 坠毁）
例：如果整个欧洲人口锐减，那么出生的婴儿就很少。If the ppulatin _____ acrss Eurpe, we will have fewer babies.
Its ppulatin has crashed by as much as 90 per cent in the last few years.
句意：其数量在近年内减少了百分之九十之多。
【句法分析】这四个句子都含有定语从句。在第一句中，when 是关系副词，代替先行词a time； 第二句中，why 是关系副词，代替先行词the main reasn； 第三句中，where 是关系副词，代替the places； 第四句中，that 是关系代词，第一个指代chemicals, 第二个指代the plants。
The slutin t the mystery f the mnarch’s amazing ability cmes at a time when it is in serius truble. Sadly, human activity is the main reasn why the number f mnarch butterflies is falling. In many f the places where the butterfly can be fund, peple are destrying the natural envirnment. They cut dwn trees and use chemicals that kill the plants that mnarch caterpillars eat.
【应用示例】1. I still remember the time when I first became a cllege student. 我还仍然能记得我第一次成为大学生的时候。2. This is the place where we met ten years ag. 这是我们十年前见面的地方。3. This is the reasn why he suddenly disappeared. 这就是他突然消失的原因。4. Where is the bk that I bught yesterday? 我昨天买的书哪里去了？
I’d like t live in a twn ______ there are nt t many cars.Winter is the seasn __________ many animals sleep.I can’t think ________ anyne wuld d that.It was s quiet in the muntains _________ the bus stpped.She tld me abut a place ________ there are thusands f butterflies.I wish I knew _______ I failed my exams.
awareness: knwing sth exists and is imprtant; being interested in sth.n. 意识，认识 aware adj. 知道的,注意到的,觉察的be aware f 知道；了解
例：重要的是学生懂得如何使用互联网。 It is imprtant that students develp an __________ f hw the Internet can be used.
The research n the mnarch’s behaviur has hwever led t a greater awareness f this creature.
句意：不过，对黑脉金斑蝶行为的研究也使得人们对这种生物有了更多的了解。
例：如果你先上船，给我留个位置。 __________ fr me if yu reach the bat first.
The mre we knw abut this lvely creature, the greater the chance it will survive and keep its place in the natural wrld fr a lng time t cme.
句意：我们对这种迷人的生物了解越多，它们在自然界中得以长久生存并保持其位置的可能性就越大。
Keep a place
1. keep ne’s place 占据位置
例：知道得越多，越会体会到自己知道得越少。________ learned a man is, _______ yu willrealize hw little yu knw.
2. the mre..., the mre...是固定搭配，“越……，就越……”。