【导语】高二一年,强人将浮出水面,鸟人将沉入海底。 高二重点解决三个问题:一,吃透课本;二，找寻适合自己的学习方法；三，总结自己考试技巧，形成习惯。为了帮助你的学习更上一层楼，免费高二频道为你准备了《高二英语必修三第二单元重点：Healthy eating》希望可以帮到你！
1. Choosing what to eat is no longer as easy as it once was.
我们在选择吃的东西方面，现在不像过去一样简单了。
[问]as在此处作何解释?
[答]作连词，表示比较。又如：My hometown is no longer the same as it was. 我的家乡同过去不一样了。
2. 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. 如果我们要跟上现代生活的步伐，我们学会正确的选择吃什么以及怎么吃。
[问]如何分析此句?
[答]这里if引导的是条件状语从句，we had better ...是主句，what and how we eat 是宾语从句做about的宾语。keep up with 赶上，跟上，had better。
3. When we choose what to buy and eat, we had better think if the food will give us the nutrients we need. 当我们选择我们想要买和想要吃东西的时候，我们想一想这些食物是否提供了我们所需要的 营养。
[问]这个句子中有三个从句，对吗?
[答]对。when...， 是时间状语从句;if...是宾语从句;we need是定语从句。
4. Some nutrients help build our body and amke it stronger. 一些食物有助于我们增强体魄。
[问]build our body and make it stronger 一起做help的宾语吗?
[答]是的。
5. Caicium, which is found in eggs, milk and other dairy products, is good for our bones and teeth.
[问]which is found in eggs, milk and other dairy product 是定语从句吗?
[答]是的。而且引导词which在从句中作主语，代替calcium。
【同步练习题】
1. Which of them do you think -- to go to the meeting?
A. should B. must C. ought D. to be
2.--Where is he?--He books in the library.
A. must read B. must be readingC. must have read D. read
3. These machines ought once a week.
A. to be cleaned B. to cleaned C. clean D. be cleaned
4. He suggested that he there by train.
A. should go B. went C. going D. will go there
5. The teacher advised the students to English every day.
A. listen B. to listen C. listening D. listened