1.
课本原句：If we want to keep up with the high pace of modern life, we had better learn to make the right choices about what and how we eat.
知识要点：had better“最好”，是情态动词，后跟动词原形，指现在或将来的时间，不指过去。它没有人称、时态和数的变化，否定形式是had better not do sth.。
考例 ：It’s freezing outside. You _________ put on your coat.
A. had better to *B. had better
C. would better D. would better to
点拨：从“外面寒冷”可知“穿上大衣”是一种建议，所以选B。
2. 课本原句：Vitamins, fibre and minerals, which we can get from eating vegetables and fruits, help our body fight disease and give us energy.
知识要点：energy是名词，意思是: 1)精力, 活力；2)(语言, 行为等)生动; 3) [pl]干劲, 劲头, 力气, 能力; 4) (物)能, 能量。
考例1)To regain their _________ after an exhausting game, the players lay in the grass.
A. force *B. energy C. power D. health
点拨：本句句意是“在一场筋疲力尽的比赛之后，选手们躺在草地上以恢复力气”，此处所填energy的意思同strength。 force的意思是“力量，武力”； power的意思是“能力,力量, 权力”。
考例2)My grandfather is as _________ as a young man and hates sitting around doing nothing all day.
A. enthusiastic *B. energetic
C. talkative D. sensitive
点拨：energetic是energy的形容词形式，意思是“精力充沛的, 积极的”，由题中的as a young man的提示可知选B。enthusiastic的意思是“热心的，热情的”；talkative的意思是“多话的, 爱说话的, 多嘴的”；sensitive的意思是“敏感的, 灵敏的”。
3.课本原句：Because we have so much to choose from, many companies and stores offer advice about what we should eat.
知识要点：advice的意思是“建议, 忠告”，是不可数名词，不可与不定冠词或数词连用，也没有复数形式。“一则建议”应说成a piece of advice。
考例：Father went to his doctor for about his heart trouble.
A. an advice *B. advice
C. advices D. the advices（点拨略）
4.课本原句： It’s a list of things that a person should and should not eat in order to stay fit and healthy.
知识要点1) 情态动词should的意思是“应该”，用来表示: 1)义务或职责；2)可能性或期望；3)可能性或可能发生的事件。（以下点拨略）
考例1) —When can I come for the photos? I need them tomorrow. —They _________ be ready by 12:00.
A. can *B. should C. might D. need
考例2) It’s nearly seven o’clock. Jack _________ be here at any moment.
A. must B. need *C. should D. can
知识要点2) stay在此处是连系动词，后跟形容词作表语，意思是“继续处于某种状态”，如：stay calm（保持冷静）。它一般不可用于被动语态，也不用进行时态。
考例：Why don’t you put the meat in the fridge? It will _________ fresh for several days.
A. be stayed *B. stay
C. be staying D. have stayed
点拨：从题干的形容词fresh的暗示可以看出要填系动词，由Why don’t you do sth.这个表达建议的常用句型可以看出后一句应用一般将来时。
