蜘蛛英语presentation.ppt

the SPIDER2021/8/141A briefintroduction2021/8/142Live around the worldforestgrasslandsold buildingsyour house !eaves( (屋檐屋檐) )branch( (树树杈杈) )your back garden40’0002021/8/143uglydangerousterribledisgustingpoisonousArachnophobia(蜘蛛恐惧症蜘蛛恐惧症)appearanceTendency to stay in dark placesAbility to poison humans2021/8/1442021/8/145A briefintroduction2021/8/146①①Morphological￿Features ( (形态特征形态特征形态特征形态特征) )②￿Life￿￿Habits③Propagation( (繁殖繁殖) )④Harm￿and￿good ⑤Spider￿show2021/8/147①① Morphological Features (形态特征形态特征)Rash(痒痒)2021/8/1482021/8/149Are spiders insects or not ?2021/8/14108 legs8 eyesOnly 2 parts2021/8/1411①①Morphological￿Features ( (形态特征形态特征形态特征形态特征) )②￿Life￿￿Habits③Propagation( (繁殖繁殖) )④Harm￿and￿good ⑤Spider￿show2021/8/1412②② Life Habits①￿habitat(栖息环环境)②￿eating③￿ ￿weaving￿webs④￿venom( (毒液毒液) )2021/8/1413The￿environment￿spiders￿live￿in￿is￿usually￿sunless￿shady￿and￿humid.①①2021/8/1414Spiders chiefly feed on Spiders chiefly feed on insects, other small insects, other small spiders and some spiders and some small animals such as small animals such as fish, frogs or birds.fish, frogs or birds.②②2021/8/14152021/8/14162021/8/14172021/8/1418③③ weaving webs2021/8/1419④ venom(毒液)Poison glandPoison fang30 of 40’000 spiders produce poison that can cause serious illness to humans2021/8/1420Brown recluse spider(棕色遁蛛棕色遁蛛)Brazilian wondering spider(巴西漫巴西漫游蛛游蛛)Australian funnel-web spider(漏斗形漏斗形蜘蛛蜘蛛)Black widow spider (黑寡妇黑寡妇)2021/8/1421①①Morphological￿Features ( (形态特征形态特征形态特征形态特征) )②￿Life￿￿Habits③Propagation( (繁殖繁殖) )④Harm￿and￿good ⑤Spider￿show2021/8/1422③PropagationThe male spider weaves a special webSecretes(分泌分泌) his sperm(精液精液) into the webUse his palps(触须触须) to suck(吸吸) the spermInsert his palp into the female spider’s genital pore(生殖孔生殖孔)The sperm meet the eggs and mating(交配交配) process is overmating processmating process2021/8/14232021/8/1424①①Morphological￿Features ( (形态特征形态特征形态特征形态特征) )②￿Life￿￿Habits③Propagation( (繁殖繁殖) )④Harm￿and￿good ⑤Spider￿show2021/8/1425④④Harm and good2021/8/1426Sometimes they bite humans but it is really rare.harm2021/8/1427Can be used to manufacture medicineDestroy pestsIts silk(丝) is an excellent material which benefits human goodgood2’250’0006’000’0002021/8/1428①①Morphological￿Features ( (形态特征形态特征形态特征形态特征) )②￿Life￿￿Habits③Propagation( (繁殖繁殖) )④Harm￿and￿good ⑤Spider￿show2021/8/1429Spider show2021/8/14302021/8/14312021/8/14322021/8/1433①①Morphological￿Features ( (形态特征形态特征形态特征形态特征) )②￿Life￿￿Habits③Propagation( (繁殖繁殖) )④Harm￿and￿good ⑤Spider￿show2021/8/1434conclusionSpiders do more good then harm to us. To protect the environment and keep the ecological balance we should spare(饶恕饶恕) spiders and protect them.Let’s make friends with spiders.Though spiders are not very beautiful, they are really interesting creatures 2021/8/1435Thank you2021/8/1436部分资料从网络收集整理而来，供大家参考，感谢您的关注！。