一、导读：

Key words & expressions involved

1.skip vt./vi.    2. pass out     3. immediately adv./conj.     4. concentrate vi/vt   

5.extreme adj./n.    6. slim down       7. concerned adj.         8. effect

9.prove linking.v/ vt. 10. diet n./vi.       11. function vi./n.           12. take in  

13. energetic adj.      14. get into shape      15. frightened adj.

二、导思：【课文定位】根据语境推测下列单词或者短语的中文意思并且反复诵读

1.  A teenage girl fainted yesterday at Stonechester High school after skipping meals. ____________________

2.  She then passed out in her morning PE lesson and was rushed to hospital. ___________________________

3.  Jennifer was found to have dangerously low blood sugar levels and was treated immediately. ____________

4.  She told me she had trouble concentrating in class. _____________________________________________

5.  Teenagers sometimes turn to extreme methods to slim down quickly. _______________________________

6.  In a society where being thin is often seen as being beautiful, teenagers sometimes turn to extreme  methods to slim down quickly. ________________________________

7.  Health experts are concerned about these figures. __________________

8.  They are increasing their efforts to educate teenagers about the side effects of losing weight too quickly. ________________

9.  These so-called “quick-fix methods” prove to be harmful to teenagers.______________________________

10.  She pointed out that it is important to have a healthy balanced diet since teenagers are still growing and their bodies need a lot of nutrition to function well. __________________ ________________

11.  If they do not take in enough food, they may feel weak and get ill easily. ____________________________

12.  What’s more, they should keep regular hours and get plenty of exercise to stay energetic and fit.    _____________________________________________

13.  I hope these lifestyle changes can help me get into shape. ________________________________________

14.  I was very frightened when I woke up in hospital last Thursday.  _________________________________

三、导学&导练: 掌握核心单词的用法和词形/性变化

1.skip 过去式：_____________    过去分词：_____________

①vt. 不做（应做的事等）；跳过;略过

I often skip breakfast altogether. 我常常干脆不吃早饭。

 ②vi. 蹦蹦跳跳地走

She __________________ happily along beside me. 她连蹦带跳，高高兴兴地跟着我走。

2.faint

① adj. 快要昏厥的；微弱的；可能性不大的→ adv. _________________微弱地；模糊地；虚弱地

The walkers were faint from hunger. 步行者饿得头昏眼花。

微弱的光a _____________light    淡淡一笑a ___________smile    一点点希望a __________ hope

② vi. 昏厥     饿昏过去__________________ from hunger

3.immediately  

① adv. 立即，马上      

She answered almost _____________.   她几乎立刻就回答了。   

② conj. 一…就 = As soon as

________________ she'd gone, I remembered her name.   她刚走开我就想起了她的名字。

4. concentrate  →adj. _____________浓缩的；全神贯注的   n. _____________浓度；专心；集合

vi. & vt. 集中（注意力、思想等）；全神贯注

I can't _________________ ________________my work with that noise going on.

吵闹声不绝于耳，我无法集中于工作。

________________ all my efforts________________ sth. 全力以赴

5. extreme  

① adj. 极端的；严重的

Children will be removed from their parents only in ________________circumstances.

只有在极端情况下才会让孩子离开父母。

② n. 极端不同的感情（或境况、行为方式等）

He used to be very shy, but now he's gone to the opposite ________________.

他以前很害羞，现在却走向了另一个极端。

6.slim过去式：_____________ 过去分词：_____________→比较级：_____________ 最高级：_____________

①vi.（靠节食等）变苗条，减肥

The young woman tries to get fit and slim down.这位年轻女士努力使自己身体健康、体型苗条。

They're restructuring and ________________ down the workforce. 他们正对职工加以重组和裁减。

②adj.苗条的；微薄的；小的

a slim figure 苗条的体形

a _________________ chance of success 成功的可能性不大

7. concerned  → concern  n. 关系；关心；关心的事   vt. 涉及，关系到；使担心

① adj. 担心的，忧虑的；关注的，关切的

be concerned about/for sth./that... 担心，担忧    

She was _____________that she might miss the turning and get lost. 她担心自己会错过转弯的地方而迷路。

be concerned_____________ sth.与…有关；对...感兴趣    

She _________ ____________ ______________the technology of clone referred at the meeting. 

她对会议上提到的克隆技术感兴趣。

② concern v. v. 影响，牵涉，与...有关，让...担忧

Don't interfere in what doesn't _____________ you. 不要管与自己无关的事。

8. effect n. 效果，作用；影响

→adj. _____________有效的；实在的；给人深刻印象的  v. _____________ 影响；使感染；

→adv. _____________有效地           [OPP] _____________ adj. 无效的；不生效的

①come into effect 生效；开始实施

New controls come into effect next month. 下月开始实施新的管制措施。

②in effect实际上；事实上；在实施中；有效

_______________ _______________, the two systems are identical. 实际上，这两种系统完全一样。

These laws are in effect in twenty states. 这些法律在二十个州有效。

9. prove  

① vt. 证明，证实

Just give me a chance and I'll_____________it to you.    只要给我个机会，我会证明给你看。  

② linking v. 后来被证明是   系动词无进行、无被动。

This theory ________________(= turns out) to be true.   这条理论后来被证明是正确的。  

10.diet  

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