本課簡(jiǎn)介

本課主要介紹了由古至今人們對(duì)飲食的看法。遠(yuǎn)古時(shí)候，人們認(rèn)為吃什么補(bǔ)什么。文明社會(huì)的人們則一度認(rèn)為人參的根，雞蛋，西紅柿有各自不同的神奇功用。今天，人們認(rèn)為魚有強(qiáng)身，健腦，壯骨，美膚等作用，還認(rèn)為飲食方面有諸多禁忌。如此種種的說法是否有道理，本課課文會(huì)給你一個(gè)答案。

本課主要語言點(diǎn)

1. Many primitive people believed that by eating an animal they could get some of the good qualities of that animal for themselves.

本句中that 引導(dǎo)的是一個(gè)賓語從句。賓語從句在前幾個(gè)單元中我們已有了比較多的了解。掌握賓語從句并不困難。請(qǐng)看下面的句子：

1) He says that friendship is very important to him.(他說友誼對(duì)他很重要。)

2) Can you tell me where the bookstore is?(你能告訴我書店在哪兒?jiǎn)?)

3) I don''t know whether the letter is overweight.(我不知道這封信是否超重。)

by 后面跟動(dòng)詞的現(xiàn)在分詞表示某人做了某件事，并通過這件事產(chǎn)生了某個(gè)結(jié)果。請(qǐng)看下面的句子：

They made a living by selling newspapers.(他們通過賣報(bào)謀生。)

2. They thought that eating deer would make them run as fast as the deer.

本句中that同樣是引導(dǎo)一個(gè)賓語從句。在賓語從句中，動(dòng)名詞短語eating deer做主語。

make sb. do sth.意思是“使某人做某事”。make 后面的復(fù)合賓語中動(dòng)詞不定式符號(hào)to要省去，但是用被動(dòng)語態(tài)時(shí)一定要用to，請(qǐng)看下面的句子：

1) The boss made them work from morning till night.(老板使他們從早到晚地干活。)

2) She was made to finish the book in two days (by her father)。(父親讓她兩天把書看完。)

3. Some savage tribes believed that eating enemies that had shown bravery in battle would make them brave.

本句中的第一個(gè)that 引導(dǎo)的又是一個(gè)賓語從句，而后一個(gè)that 引導(dǎo)的是定語從句，修飾enemies

本句中them brave 是make 的復(fù)合賓語，請(qǐng)看下面的句子：

1) Don''t wait for him. He will make us late.(別等他了，他會(huì)使我們遲到的。)

2) He was afraid that the story would make things worse.(他擔(dān)心那個(gè)故事會(huì)使事情更糟。)

3) I didn''t know that the news had been made public.(我不知道這個(gè)消息已經(jīng)公開了。)

4. It was once thought …

Eggs were thought to make the voice pretty.

Tomatoes were believed to have magical powers

They were called love apples and were supposed to make people who ate them fall in love.

上面的這些句子全部用的是被動(dòng)語態(tài)。

suppose 是一個(gè)常用詞，請(qǐng)注意掌握。

1) I suppose it was reasonable for him to want his money back.(我看他想要回他的錢是合理的。)

2) I am not supposed to talk to you about this.(我不能和你談這個(gè)。)

3) Suppose / Supposing something should go wrong， what would you do?(如果有了什么差錯(cuò)，你怎么辦?)

5. How surprised the people who thought tomatoes poisonous would be if they could know that millions of pounds of tomatoes were supplied to soldiers overseas during WWII.

“how surprised the people would be”是主句，這是一個(gè)感嘆句;who 引導(dǎo)的定語從句修飾people;if 引導(dǎo)的是條件狀語從句。

感嘆句通常用what 或how 引起。what 用來修飾一個(gè)名詞，how 修飾一個(gè)形容詞，副詞或動(dòng)詞。

本句中that 引導(dǎo)的是一個(gè)表語從句

7. Washing food down with water as a substitute for chewing is not a good idea.

substitute for 是一個(gè)常用詞組，意思是“代替，代用品”;substitute也可以做動(dòng)詞用，意思是“替代”。請(qǐng)看例句：

1) Don''t you think it a good idea to use plastic as a substitute for wood?

(你覺得用塑料做木材的代用品是個(gè)好主意嗎?)

2) Daydreaming cannot substitute for hard work.(白日夢(mèng)不能取代辛勤的努力。)

8. Many people think of bread as a carbohydrate food.

think of … as是一個(gè)習(xí)慣用法，意思是“把…看作是…”，“認(rèn)為…是…”。請(qǐng)看下面的句子：

1) People think of him as a hero.(人們把他看作英雄。)

與think of …as 意思相近的習(xí)慣用法還有regard …as;consider…as;look upon…as;view…as;see …as 等等。

本課主要詞組

1. be eager to 　2. be supposed to

3. fall in love 4. grow up

5. be supplied to 6. substitute for

7. have sth. to do with　

9. as a matter of fact 10. think of …as…

11. in the same way

（責(zé)任編輯：lqh）

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