warn sb. of sth提醒某人注意…,使警惕… warning n.警告,警戒 18. protect protect against 防御 保护……使不受 protect… from (doing) sth保护……使不受 挡住 protection n. 1)保护(不可数)-2)保护物、起保护作用的东西(可数) protective adj. 保护性的 protector n. 保护人、保护性的东西(n.+n.) 19. chemical,adj. 化学的,n. 化学物质 chemistry n. 化学 chemist n.化学家、药剂师 at the chemist’s 在药房 chemical change 化学变化 chemistry lab 化学实验室 21. join,v 1) 参加;加入 join sb in doing sth join+组织,团体 join in+活动=take part in= go in for(参加,喜欢) 2) 使……相结合 join A to B join A and B together 3)joint adj.共同的 by our joint efforts 22. communicate, 1)vi,沟通,交流 6
communicate with sb 2)vt,传达(信息等) communicate sth to sb 3) n, communication n. 传达,通讯 23. burn,v, n 1) 燃烧,点燃,发光 2) 烧伤,烧焦,烫伤,晒黑 3)burning adj. 燃烧着的 4)burn away 烧掉 burn down 渐渐烧完 burn sth down 把…烧得精光 24. replace,v 1)取代,代替= take the place of sb/sth replace A with B 用B代替A 2)将…放回原处 3)replacement n. 更换,替换的人或物 25. hardly =almost not 26. 虚拟:Without…, sth would (could) V原. Without trees, soil would be washed away. 27. exchange exchange A for B 用A 交换B 28. main,adj,主要的, mainly adv. 大体上,主要地 chief adj. most important最重要的;主要的 n,首领,酋长(s) 7
chef,大厨(s) 29. destroy v.破坏,毁坏 destruction n. 毁灭,毁坏 destructive adj,毁灭性的,摧毁式的 30. announce v. 公告,宣布 announcer n. 发言人 announcement n. 声明,公告 31. in the end 最后(可用于将来时) at the end of 在…末(时间、空间) by the end of 到…为止(时间) on the end of在…末端上 32. nature n. natural adj. naturally adv. unnatural adj. unnaturally adv. 【知识梳理2】U2词汇词组 1. free v. 愣住,吓住;结冰,凝固 freezing adj. 极冷的 frozen adj. 冰冻的 2. comfort v/n. 安慰 comfortable adj. 舒适的 comfortably adv. 舒适地 uncomfortably adv. 不舒服地,困难地 8
3. impatient adj.不耐烦的 impatience n. 不耐烦,急躁 impatiently, adv patient adj. 耐心的,忍耐的,n.病人 be patient with 对…耐心 patience n.耐心 patiently adv. 4. treatment v. 对待,处理 treat v. 对待,治疗 1) treat sb as… 2) treat sb. to sth. 招待,请客(吃东西) 5. thorough adj. 彻底的 thoroughly adv. 十分地,彻底地 6. reply n./v. 回复,答复 reply to=answer 7. exercise v./n. 运动,锻炼/ 练习 8. value 1)n.价值,重要性 Most parents know the value of good education. values(以复数形式出现) n.价值、观念、道德水准 The values of today’s young people differ from their parents. be of value=valuable 2)v.估价,珍视,珍重 The painting has been valued at 20000 dollars. They valued independence more than anything else in the world. valuable adj.有价值的=invaluable=priceless valueless adj.无价值的 9
take up too much of your valuable time. 9. complete adj./v. 完整的,完成 incomplete adj. 不完整的 completely adv. 完整地,十分 10. increase v/n. 增加 increase from…to…从…增加到… increase by +数字, 增长了多少(幅度) increasing adj.日益增长的 With the increasing number of pupils ,we have to build another two new rooms. increasingly adv.越来越… German corporations increasingly tend to build plants abroad. decrease v/n. 减少,下降 reduce v.减少 improve v, 提升,改善 11. bathe v. 洗澡[be?e] bath n. 浴缸,盆浴,洗澡[bɑ:θ] 12. the amount of …的数量 a certain amount of 一定量的 a large amount of=large amounts of 大量的(un.) 只能修饰可数n:many, few, a few, a number of, several等 只能修饰不可数n:much, little, a little, an amount of=amounts of, a great deal of等 都可以修饰的:some, any, a lot of= lots of, plenty of, enough等 13. remain v.保持,仍是 1)remain +adj. remain to be +adj/n. 10