人教高中英语素材选修8unit5重点单词讲解

1、Unit51. identify vt. sb. /sth. as sb./ sth. 确 认 ， 证 明某人/某物系某人/某物她认 出那 个 男子就是 袭击她 的人。The police are trying to identify the dead body.Scientists have identified the gene that causes abnormal growth.identification n. 鉴别 ；身 份证 明 identification card身 份证identity n. 身 份 ；特征identical adj. 完全相同的，一样 的2. alter

2、native adj. ( 作定 语 ) 供 选择 的，可代替的We recommend using alternative sources of fuel such as charcoal( 木炭 ).As there is less and less coal and oil, scientists are exploring new ways of making use of alternative energy, such as sunlight, wind and water for power and fuel.n. 可能的 选择 ；替代物Minibuses with seats

3、for 12 passengers offer an alternative to expensive taxis and crowded public transport.Im sorry, there s no alternative but to sell the car.另1无选择只好做 have no alternative but to do= have no choice but to do = have nothing to do but do除了放弃那个计划，我 别 无 选择 I have no alternative but to give up the plan.= I

4、have no choice but to give up the plan.= I have nothing to do but give up the plan.3. Review the words: starve; accurate1)They got lost in the desert and (starve) to death.2) She is starving trying to lose weight.3) By the year 2025, no one will die of (starve) because there will be food foreveryone

5、.4) He is getting back this afternoon, to be (accurate), at four o clock.5) It s impossible to predict the weather (accurate).6) (accurate) is most important in translation.4. Interrupt vt. vi. 打 断 (讲话 或 讲话 人 ), 打 扰I wish you wouldn t interrupt me all the time.Sorry to interrupt you, but I have some

6、thing urgent to tell you.vt.使暂时停止；中断The war interrupted the trade between the two countries.My studies were interrupted by the Cultural Revolution.Will you stop (interrupt) me when Im talking?He burst into the room, my teaching.5. acute adj. 敏 锐 的 ; 聪 明的，机敏的Dogs have an acute sense of smell.His hear

7、ing is so that he can even hear a pin drop. 剧 烈的； 强烈的 acute pain acute embarrassmentThere is an acute shortage of water and food.急性的SARS stands for severe acute respiratory syndrome.acute pneumonia 急性肺炎6. assume vt. 假定 ; (想 当 然地 )认为I didn t see your car, so I assumed you d gone out.I assumed she was

8、 American but she was actually Canadian.Lets just assume the statement to be true.Its generally assumed that stress is caused by too much work.assuming 分 词 可以充 当连词 使用 =supposing 或 suppose 意 为 “假如；假 设 ”Assuming it rains tomorrow, what shall we do?Assuming we have won a lottery, how shall we use the m

9、oney?We reserved a big table on the assumption that fifteen people would come.We can t just make an assumption but must get the accurate evidence.The assumed enemy sometimes will disturb your life.7. regardless of 不管；不 顾We strongly advocate equal treatment for all, regardless of race, religion, or s

10、ex.All ourproposals were rejected regardless of their merits.This special school accepts all disabled students, _ educational level and background. A.according to B. regardless of C. in additionD.in terms ofJoe is a good basketball player being short and fat.ups and downs, she never takes her fate l

11、ying down.8. Review “at （the） most; at least ”You could buy a good washing machine for about $350, $400 （ 至多 ）.（最高） the temperature in summer goes up to about 38 .It will take you （ 至少 ） 20 minutes to get there.He had been dead for （ 至少 ） a fortnight.It would cost $1 million （ 最起 码 ）.9. 用合适的副词 或介 词填

12、 空：1) The gas has been cut due to the quake.2) You have to cut on the time surfing the internet.3) Davis cut to ask if anyone would like a drink.4) You can cut the last sentence of the paragraph.5) I feel very cut if I didn t know what was happening in the world.6) Cut the meat and carrots and then

13、mix them.10. 用括 号内单词 的适 当 形式 补 充句子。I felt a (sharp) pain in my back.Prices have risen (sharp) over the last few months.(sharp) all your pencils before the test.Time is (ripe) for a reform.The tomatoes quickly (ripe) in the hot weather.They are trying to _(wide) the discussion to include environmenta

14、l issues.11. mess n 杂乱 ；混 乱 ； vt. 弄 脏 ；弄 乱 messy adj. 凌 乱 的； 脏 的The room was because the thief turned it upside down.I feel I ve made of things.It took me ages to get this right I don t want anyone to mess it again.It doesn t matter if you mess it , you can always try again.Sorry the place is so , I

15、 haven t had time to clear up.12. analyse/analyze vt. 分析 analysis plur. analyses n. 分析analytical adj. 分析的；用分析方法的analyze1)People do not every problem they meet.2)The experts are doing of the samples.3) Would you make/carry out/conduct of the current situations in our country? 4) Theearliest computer

16、was called an machine.13. significance n. 意 义 ；意思；重要性significant adj. 重要的；相当数 量的For a very long time, people always have been trying to find out the significance of life.The speaker gave us a talk of great .In a sense, they are spending a amount of time in fruitless efforts as they do manythings at

17、the same time.Health problems can be reduced by careful diet.14. somehow以方式；不知怎么莫名其妙地anyhow=anyway 无 论 如何；不管怎样 somewhat 有点 儿 ；有几分；稍微Somehow the right chance never seemed to present itself.I didn t mean to cheat, but it was still cheating anyhow.Anyway（ 总 之 ）, doing what you love is wonderful.Everyth

18、ing seemed to be all right, yet he felt strange and somewhat uneasy.15. be fed up with 厌倦的,厌烦的I am really fed up with the bad weather.I got fed up with my job listening to the customers complaints.You look fed up what s the matter?He was tired _ the urban life and hoped to move to the country, expec

19、ting a change in his current life style.He tired the audience his long speeches.Andy was bored listening to the same words every day.16. applaud vt. 向 . 鼓掌; 向 . 喝彩 The audience applauded the singer for three minutes.All people present applauded her success. 称赞 ; 赞赏 We applauded him for his courage.

20、I applaud your decision. vi. 鼓掌 欢 迎 ; 喝彩Everyone applauded when the play ended.掌 声 ).As I left the stage, there was only some quiet applause(u17. look ahead 向前看 ,考 虑 到 将来We must look ahead before we make a decision. You can expect to find a multi-storey building on this site. Of course, I m looking

21、ahead five years when I tell you this.Everyone should look ahead and save a little money each year for when he retires.Look , and you ll have a brighter future.Ive looked all my papers but I still cant find the article.I like to look my high-school days.We should not look down disabled people.The students all look up _ the old teacher.Look ! There s a car coming.The police are looking the records of all those involved in the crime.18. accelerate vt.& vi. 使增速 , 加快The driver stepped on the gas and accelera