1. Choosing what to eat is no longer as easy as it once was.
我們在選擇吃的東西方面，現(xiàn)在不像過去一樣簡單了。
[問]as在此處作何解釋?
[答]作連詞，表示比較。又如：My hometown is no longer the same as it was. 我的家鄉(xiāng)同過去不一樣了。
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. 如果我們要跟上現(xiàn)代生活的步伐，我們好學(xué)會正確的選擇吃什么以及怎么吃。
[問]如何分析此句?
[答]這里if引導(dǎo)的是條件狀語從句，we had better ...是主句，what and how we eat 是賓語從句做about的賓語。keep up with 趕上，跟上，had better好。
3. When we choose what to buy and eat, we had better think if the food will give us the nutrients we need. 當(dāng)我們選擇我們想要買和想要吃東西的時候，我們好想一想這些食物是否提供了我們所需要的 營養(yǎng)。
[問]這個句子中有三個從句，對嗎?
[答]對。when...， 是時間狀語從句;if...是賓語從句;we need是定語從句。
4. Some nutrients help build our body and amke it stronger. 一些食物有助于我們增強體魄。
[問]build our body and make it stronger 一起做help的賓語嗎?
[答]是的。
5. Caicium, which is found in eggs, milk and other dairy products, is good for our bones and teeth.
[問]which is found in eggs, milk and other dairy product 是定語從句嗎?
[答]是的。而且引導(dǎo)詞which在從句中作主語，代替calcium。
【同步練習(xí)題】
( ) 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
