Unit 2 Healthy eating 知识点归纳
1. diet 日常饮食 go on a diet = be on a diet 节食 a balanced diet 平衡饮食
diet既可指习惯上吃的食物，又可指规定的食物°特指维持健康的食物。stare 指固定的凝视，暗示好奇、勇敢、无礼貌或愚蠢。
food是•般用语，指进入身体供人或动物生长的食物。强调种类时为复数名词。 glance “一，瞥”
provide sb. with sth. = provide sth. for sb. si甲ply sb. with sth = supply sth. to sb.
offer sb. sth / offer to do sth.
energy原是物理学上的术语“能量”，用于人时则指“精力，活力，能量” power （身体上，精神上，自然的）能力，体力，智力，力量
strength人的或者物体内在的或者固有的力量
fbrce主要指做某事而使用的外力，或者武力，部队，兵力。
frustrated修饰人或者人的声音，表情 frustrating令人沮丧的 be frustrated with 对….感到沮丧
ought to
(1)表示资任，义务
He ought to look after his sister.
(2)表示建议或劝告
You ought to study 。
ouglit to 的否定形式 ought not to
of
（1）想起：记起
（2）考虑
（3）为…着想
（4）想：打算
think about 想；考虑
think out 想出
ouglit to have done = should have done 过去应该做而未做
Sorry. I didn't think of your name just now.
We should tlunk of the matter carefiilly.
Chen Guangbiao is always thinking of the poor people in the poor areas.
think highly 八veil of 高度评价 tlunk over仔细考虑
I am thinking of giving up smoking, tlunk much of对…评价很高 think badly / little of 认为不好
must. may. aught, should用于肯定猜测；can/could用于否定和疑问猜测。
(1)表示对现在情况的猜测，用“情态动词+动词原形”
He must be in the •定在教室。
(2)表示对过去情况的猜测，用“情态动词+have+过去分词”
The ground is wet, it nuglit have rained last ，昨晚可能下雨 「。
(3) can/could用于疑问句表示“可能…吗”：用于否定句表示“不可能”。 一It caift be lum. He has gone to XTan. 不可能是他，他去西
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