1、Unit21.diet c.&.u.日常饮食 Proper diet and exercise are both important for health. A balanced/healthy diet is necessary for good health. People who are on a diet mustn’t have chocolate.on a diet/go on a diet节食vi.节食She is always dieting but she never seems to lose any weight.2.protective
2、adj.给予保护的;保护的protect vt. protection n.3.balance v.平衡;权衡 n.天平;平衡How long can you balance on one leg?Try to keep a balance between work and relaxation.strike a balance between A and B把两者安排妥当keep the balance of naturekeep one’s balancelose one’s balancebe out of balanceSuddenly the bo
3、y lost his balance and fell over.4.roastadj.烤制的 v.烤;烘;烘烤Put the meat into the oven and roast it for a few minutes.The meat is roasting in the oven.Tonight we will have roast beef for supper. 5.ought to v.aux.应该ought to do sth You ought to apologize for what you said just now. ought no
4、t to do sthSuch things ought not/oughtn’t to be allowed. Ought I to write to express my thanks? ought (not)to have done You ought to have taken the medicine.When ought we to begin our work?He ought to go there with you, oughtn’t he?6.lose weight减肥 put on weight/gain weight增肥watch on
5、e’s weight控制体重 7.slim adj. 苗条的 a slim figure 苗条的身材 vi. 变细；减肥 She is slimming by dieting.8.curiosity n.好奇心out of curiosity出于好奇Curiosity drove him inside.He is a boy full of curiosity. curious adj. curiously adv.The boy was curious about everything he saw. I
6、 was curious to hear what they would say about this.很想知道9.raw生的，未加工的TheJapaneseareusedtorawfishasfood.Thesupplyofrawmaterialstothefactoryshouldbeguaranteed.10.getawaywith逃脱，被放过Howdidhegetawaywithcheating?携带…偷逃Thievesgotawaywithcomputerequipmentworth30,000dollars.11.discount折扣Theywerese
