北师大版选修7 Unit 21 Human Biology Lesson 2 Brain Power学案.docx

unit 21 human biology lesson 2 brain power学案一、英汉互译1. 荣幸的_2. _ postpone3. 扫描 _4. _ ample5. 储存 _答案：1.privileged2.推迟，延期3.scan4.充足的，充裕的5.storage二、完成短语1. 由组成 consist _2. 对负责 be responsible _3. 加大，增强 build _4. 推迟 put _5. 着手做 get down _6. 通过(考试) get _答案：1.of2.for3.up4.off5.to6.through三、用方框内所给单词或知语的适当形式完成短文it is an_1_ amazing organ.the brain_2_grey and white matter.it weighs just over a kilo just_3_ that，like a kilo of potatoes.but this is a very special kilo.it uses twenty percent of the bodys energy.and it contains over one hundred billion cells thats a “billion” with a “b”one hundred billion cells.these_4_nerve cells，which are_5_by electrical impulses.the brain sends messages using electrical impulses，the same way a computer works.答案：1.absolutely2.consists of3.imagine 4make up5.connected1.and it is our brain that interprets these signals and builds up a picture of the outside world.是我们的大脑翻译了这些信号，然后形成外部世界的图像。剖析：本句是一个强调句。强调了主语部分。考点：build up 建立we build up a big library.我们逐步建起一座大图书馆。单项填空china is still a developing country，as farmers _ a larger part of the whole population.abuild up bmake upcbring up dput up答案：b2privileged adj. 荣幸的we are privileged to welcome you as our speaker this evening.我们荣幸地欢迎您今晚来演讲。education should be a universal right and not a privilege.教育应当是全民的权利而非部分人的特权。it was a great privilege to hear her sing.听她唱歌真是三生有幸。归纳：privilege 用作名词，表示“特权”和“荣幸”。单项填空ladies and gentlemen，i have the great _ of introducing our speaker tonight.asorrow bprivilegecmemory dsweet答案：b3treat vt. 款待ill treat my old friends to lunch next sunday.下星期天我要请老朋友们吃午饭。im going to treat myself to a new pair of shoes.我打算给自己买双新鞋。we all treat him as a great hero.我们都把他当作是一位伟大的英雄。she was treated by a famous doctor.一位名医正在给她治疗。归纳：treat还可表示“看待”和“治疗”。单项填空ill _ my friends to dinner in return for their help.abuy bofferctreat dshow答案：c4postpone vt. 推迟；延期it was an unpopular decision to postpone building the new hospital.推迟兴建新医院的决定是不得人心的。the game has been postponed three times.这场比赛已经三度延期了。 postpone，delay，put off后面接动名词，不能跟不定式。其后的时间状语常用to或until连接。the ball game was postponed until the next sunday because of the rain.球赛因雨延期到下个星期天。if you think you are ill，you shouldnt put off/delay going to the doctor.如果你觉得不舒服就不应该拖，要赶快看医生。单项填空since the situation has changed，we have to _ making a decision.adefine bpostponecdeficit dannounce答案：b5straight away 立刻，马上考点：when they heard a cry for help，they rushed out of the room straight away.他们听到呼救声后立刻冲出门外。注意下面的句式：i came immediately i heard the news.我一听到这个消息，马上就来了。you must go to bed directly the bell rings.铃声一响，你必须立刻上床睡觉。i recognized her instantly i caught a glimpse of her.我瞥了一眼她就把她认出来了。she was on her feet the moment the doorbell rang.门铃一响，她就立刻站了起来。归纳：下列词语后都可以接从句；immediately(立刻)，directly(立即)，inst