1、Unit 21. dietc.&.u.日常饮食Properdietandexercisearebothimportantforhealth.Abalanced/healthydietisnecessaryforgoodhealth.Peoplewhoareonadietmustnthavechocolate. onadiet/goonadiet节食vi.节食Sheisalwaysdietingbutsheneverseemstoloseanyweight.2. protectiveadj.给予保护的;保护的protectvt.protectionn.3. balancev.平衡;权衡n.天平;
2、平衡Howlongcanyoubalanceononeleg?Trytokeepabalancebetweenworkandrelaxation.strikeabalancebetweenAandB把两者安排妥当keepthebalanceofnature keeponesbalanceloseonesbalance beoutofbalanceSuddenlytheboylosthisbalanceandfellover.4. roastadj.烤制的v.烤;烘;烘烤Putthemeatintotheovenandroastitforafewminutes.Themeatisroasting
3、intheoven.Tonightwewillhaveroastbeefforsupper.5. oughttov.aux.应该oughttodosthYououghttoapologizeforwhatyousaidjustnow.oughtnottodosthSuchthingsoughtnot/oughtnttobeallowed.OughtItowritetoexpressmythanks?ought(not)tohavedoneYououghttohavetakenthemedicine.Whenoughtwetobeginourwork?Heoughttogotherewithyo
4、u,oughtnthe?6. loseweight减肥putonweight/gainweight增肥watchonesweight控制体重7. slimadj.苗条的aslimfigure苗条的身材vi.变细；减肥Sheisslimmingbydieting.8. curiosityn.好奇心outofcuriosity出于好奇Curiositydrovehiminside.Heisaboyfullofcuriosity.curiousadj.curiouslyadv.Theboywascuriousabouteverythinghesaw.Iwascurioustohearwhatthey
5、wouldsayaboutthis.很想知道9. raw生的，未加工的 The Japanese are used to raw fish as food. The supply of raw materials to the factory should be guaranteed. 10. get away with逃脱，被放过How did he get away with cheating?携带偷逃Thieves got away with computer equipment worth 30,000 dollars. 11. discount折扣They were selling
6、everything at a discount. They give us a 10% discount. 12. winback赢回The team are determined to win the prize back next year. 14.weakness:弱点,缺点: He has his own weakness of his character. 虚弱: -Whats the cause of his weakness? -Maybe he has caught a cold. 15.strength:力量，体力Its going to be some time befo
7、re I recover my full strength.Does he have enough strength to lift these weights? 16.consult: 咨询If you feel pain in your back, please consult your doctor. 参考If you have no idea about it, youd better consult the medical book.17.digest: vt.消化Humans cannot digest everything. vi. It is a long time to wa
8、it for the food to digest after dinner. n. 摘要 Many students like to read Readers Digest.18. poison n.毒药 poisonous adj. 有毒的Some colorful mushrooms contain a deadly poison.The dog was killed by rat poison.19.earn ones living谋生 The man earned his living by selling newspaper. make/earn a living by doing
9、 sth20.debt:债cBefore I left, I had to pay off all my debts. u 词组 in debt; get into debtHe died, leaving his family in heavy debt. 21.spy: n.间谍 He once worked as a British spy in Russia. v. 从事间谍活动He spied for his country for more than 10 years. 暗中监视 spy on Have you been spying on me?22.limit:限制vt. li
10、mit sth to sth 将限制在范围内You should limit your speed to 80 kilometers per hourn. 限制There is a limit to his patience within limits在一定的限度之内limited有限的 a limited speed 23.benefit:益处c The new rule will be of benefit to everyone. There are certain benefits of modern medicine. v. These books will benefit all
11、the poor students. All the poor students will benefit from these books. bine:结合 combine A with/and B This machine combines a telephone and fax machine. Combine all the ingredients in a bowl. 25.cut down:削减We need to cut down the article to 2000 words. The doctor suggested him cutting down on smoking. 26. before long:不久以后=soon long before很久以前long before.在很久以前They will know each other well before long. They knew each other well long before. They had heard of each other long before they were introduced to each other.
