高中英语Unit 4 Creatures Large and Small教学演示ppt课件

这是一份高中英语Unit 4 Creatures Large and Small教学演示ppt课件，共35页。PPT课件主要包含了antenna，wings，eight legs，frightened，is he，does she，except，besides，except for，Sentences等内容，欢迎下载使用。

What are creatures? Can yu give sme examples?
Living things that can mve arund, such as an animal.
1. All spiders are dangerus t humans. 2. Spiders are insects.3. Sme spiders are 25 cm in size.4. Sme spiders eat lizards and birds.
Decide T r F:
What are they?
Are they insects?
an insect (dragnfly)
The bdy f an insect is divided int head, thrax and abdmen.
Types?Habitat?Way t attack prey?Silk?Eyesight/ sense f smell?…
What d yu want t knw mre abut spiders?
Nearly 40,000 types
By the pnd / in the crner…
By pisning them faint
A prtein fiber
Pr eyesight and n sense f smell
1. What is the “friend” r “enemy” mentined in the title?2. What des Winstn think f spiders?3. What des Betty think f them?
Betty thinks they are nasty and shuld be killed.
Winstn thinks that they are very useful creatures.
Lk at the title, the first and last eight lines f the excerpt. Then try t answer these questins.
Scan the excerpt and cmplete the ntes belw. Facts abut spiders 1 They are very _________ creatures.2 They are enemies f ______, but friends f _________.3 During _______ in China, _______ build _________ fr them.4 In ________, the spiders eat insects that attack farmers’________.5 They make webs with silk which is _______, __________ and _________. 6 Their pisn is useful---it might be used t treat ________ disrders in humans．
True r False
Betty thinks spiders are nasty and shuld be killed.Winstn changed his view n spider by reading. Spiders are insects.4. T the insects in the field, spiders are harmless creatures.5. The natural methd f pest cntrl is useful.6. Spiders silk have its unique prsperities.7. All spiders’ bites are dangerus t peple.8. Spiders’ pisn can treat brain disrders.
Spiders are nt___________. They_________ winter by living in _________built by farmers. In spring, they eat _________that attack farmers’ __________. They make webs with___________, which is __________, ________ and__________. Scientists plan t use spider silk in__________, etc. Their pisn can be used t treat________ _________. Therefre, spiders are___________ f insects and __________ f humans.
We shuld try t understand things in nature and nt destry them.
Ntes t the text
1. Yu’re nt frightened f it, Winstn, are yu?***sb. be frightened f sb./ sth. = be afraid f 害怕…eg. The little girl is nt frightened f strangers/ snakes. ***sb. be frightened t d sth.eg. 我害怕在高峰期穿马路.
(v.) frighten (vt.) sb 恐吓某人----Dn’t frighten her. After all, she is a child. ---That crash is the mst____________ (frighten) experience in my life.----The __________ (frighten) children were calling fr their mthers. in fright (n.) 恐惧地
frightening
2. suppse (v.) 认为 1)We suppse that the situatin will imprve. 2)I dn’t suppse he is still in twn ________? 3)She desn’t suppse he is still in twn, ________? 4)Will he cme t the party? Yes, I suppse/think/believe s.
=think/believe
5) They were suppsed t be here an hur ag. ***be suppsed t d 应该;理应6) ______ will reach the final?Whm d yu suppse D yu suppse whmC. Wh d yu suppse D. D yu suppse wh
Read Line 11 t the end and answer the questins:
Are spiders human's friends r enemies? Why?
Spiders are useful creatures
1. be useful in agriculture
shelter, survive, emerge, attack, fill, prtect
2. be useful in science
The reasn that...
3. be useful in medicine
Pisn can be used t...
Therefre, the best way t prtect spiders is :____________________________________________________________
nt t destry them
t learn mre abut their prperties and make full use f spiders
except (prep.) 除了…
1) They all went t sleep except me.2) The windw is never pened except in summer.3) She usually ges t wrk by bike except when it rains.总结：except 后可接n./ prn/ 介词短语/从句，表示整体中排除个体
except(that) / except fr/ besides
1. N ne knew his address _______ his daughter.2. D yu knw ther freign languages ________ English?3. I knw nthing abut the yung man ___________ she’s frm Beijing.4. Yur article is well written _________ sme spelling mistakes.
except that
1. Scientists are develping a material having similar prperties.= Scientists are develping a material which has similar prperties.eg. 那个朝我走来的女孩是我的侄女。The girl __________________________is my niece.
wh is running twards me
= running twards me
一般式主动：一般式被动：完成式主动：完成式被动
ding being dnehaving dnehaving been dne
1. I am reading an ____________ (interest) nvel . She is a ________ (charm) girl.总结：单个现在分词作定语通常位于名词前，相当于一个adj.
interesting
2. The prfessr wh _________ (give) a speech abut pllutin nw is frm Harvard University.
=The prfessr________(give) a speech abut pllutin nw is huse which/ that ____________(build) nw will be ur new flat.= The huse _________(build) nw will be...
is being built
being built
总结： 现在分词短语作定语，常位于名词后，相当于一个定语从句。***being dne 作定语，表示“正在被” 现在分词作定语，一般无having dne/ having been dne 形式。Practice: Textbk P 52 + wrkbk P 23 A
2. Surviving winter in them, the spiders emerge healthy and hungry.= 1)After the spiders survive winter, they emerge healthy and hungry.eg. When I heard the news, I jumped with jy.= 2) (When)hearing the news, I I turned ff the lights, I went t bed.
= 3) (After)turning ff..., I went t bed.
4) Because I am a student, I must study hard.
= Being a student, I must study hard.5) If yu exercise every day, yu will imprve yur health.= (If) exercising every day, yu') Althugh I feel spiders are nasty, I wn't kill them.=(Althugh) feeling..., I wn't ...
总结：1. 现在分词作状语，可作时间，条件，原因，让步，方式，伴随等状语，相当于状语从句，但需符合： A) 主从句动作的逻辑主语一致 B)从句动作与逻辑主语间为主动关系
2. 现分的一般式作状语，动作发生的时间与主句动词通常同时或几乎同时进行，若分词发生的动作在主句谓语动词之前，常用分词的完成式。
eg. When we heard the news, we jumped with jy.= Hearing the news, we they had been there several times, they knew the place well.= Having been there..., they knew...
总结3. 现在分词作状语，分词前可带上when, while, if,nce, until, althugh等连词，但不可带as, because, as lng as 等
4. 现分作方式状语时，常位于动词g，cme,stand,leave, sit后。eg. He std ___(lean) against the wall.现分作伴随状语时，常位于主句后。eg. He did his hmewrk, ________ (listen) t the radi.
5. 现在分词作状语，一般无being dne, 位于主句后作伴随，方式，一般无having (been) dne.6. ____________(nt knw) his e-mail, I can't cntact him.
What can we d t help prtect creatures n the earth?Be aware that every creature has its place in nature’s grand design.2. Be aware that prtecting the natural wrld means prtecting creatures.3. Refuse t buy gds made f furs, tusks r ther parts f creatures.4. Refuse t eat the meat f wild creatures.
5. Stp littering plastic bags r batteries.6. Plant mre trees.7. Be against war.8. Try t persuade the whle sciety t take envirnmental and creature prtectin int cnsideratin when they develp industry, agriculture r smething else.
Dn’t kill me! ...
Suppse yu are all spiders and yu are in great danger because humans can’t understand yu. Please intrduce yurselves and ask fr help.