Lesson 2 Spare that spider 别伤害蜘蛛
Why, you may wonder, should spiders be our friends ? Because they destroy so many insects, and insects include some of the greatest enemies of the human race. Insects would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insect-eating animals. We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.(暂不提供全文)
New words and expressions 生词短语
flocks and herds 牛群和羊群
/flCk/ the birds of the same feather flock together.物以类聚，人以群分
you are the same flock.也可指人
herd多指牛群cowherdcowboythrong and crowd swarm
owe /[U/ vt.感激欠 i owe you.i owe you a big favor. 欠issue
obligeindebt appreciate----常用口语词 正式：gratefulthankful
beast /bi: st/ n 兽形容人野蛮无比，不能用animal 形容
fraction / 'frAkF[n/ n.小部分 分数，小数 a fraction of rice will suffice
on one's behalf 代表...利益
I beat you on your behalf.我打你是为你好 on behalf of somebody /something
e.g on behalf of chinese government on behalf of =represent
authority /C:'WCriti/ n.权威authorize批准 authoritative权威性的 authoritarian独裁的
authorities 1.权威(可单数可复数) 2.当局(复数)
census /sens[s/ n.统计数据the fifth national population census.censor审查
acre /'eik[/ n.英亩 1acre=4047square meters
football pitch 足球场 football yardfootball court football field
be content with 满足于 满足作表语，不能出现定语结构
He is content with status quo.contented heart :心满意足的人
spare /spZ[/ v. 不伤害，宽恕spare meHe doesn’t spare himself.
I spare no efforts to learn english.( spare no efforts: 不遗余力作什么)
Notes on the text 课文注释
why, you may wonder-you may wonder why插入语 先不管插入语，弄清句子结构
you may wonder why spiders should be our friends?插入语位置不固定
why,you may wonder,the problem of pollution befalls human beings.
why,you may wonder,one of my friends is so kindhearted.
tear into pieces
greatest enemies:天敌dying enemycrying enemy
impossible 和possible 永远不要以人开头
It is impossible for somebody to do something.
likely可以以人做主语。i am likely to go. probable 也不以人做主语
devour狼吞虎咽devour the food
make a cake of myself make a god of myself
devour the book
If it were not for:如果这不是因为
I would not survive if it were not for his timely help.
but for 一定是虚拟语气 =if it were not for
owe感激，欠 i owe you.
引出主题all of them put together:把他们堆到一起
destroyed 后置定语，重心转到 spider 谓语动词是kill