abuse和accustom的用法夯实基础变式探究
1 abuse vt. & n．滥用；虐待
abuse one's authority 滥用权力
open to abuse可能被滥用的
keep abuse on 对…破口大骂
The government has set up a working party to look into the problem of drug abuse.
政府已成立工作组调查滥用毒品问题。
His political reputation was tainted by his abuse of the power.
他因滥用职权而破坏了政治声誉。
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2 be accustomed to习惯于……
[应试指导] 作为高级词汇替换be used to
be/get/become accustomed to doing sth.
习惯于做某事
accustom oneself to doing sth.
使自己习惯于做某事
be used to doing sth.习惯于做某事
I was accustomed to being the only child at a table full of adults.
我已经习惯了作为唯一一个小不点坐在一桌大人中间。
③ I took up skiing a couple of years ago and I found it quite addictive.
④ They are rock music addicts.
(2) 同义句改写上题句①
① Addicted to computer games，the boy didn’t want to study.(用过去分词短语作状语改写句子)
② Addicting himself to computer games，the boy didn’t want to study.(用现在分词短语作状语改写)
[夯实基础]
(1) Don’t ______ ______ __________.
不要滥用你的特权。
(2) The farmer often ______ ______ ______.
这位农夫经常虐待他的妻子。
 (3) You shouldn’t ________ ______ ______.
你不应该过度使用你的眼睛。
(4) I don’t understand why I should put up with this kind of ______ ______ ______.
我不明白我为什么要忍受她这样辱骂我。
[夯实基础]
He was accustomed to the custom and didn’t want to change it.
(1)Accustomed to the custom，he didn’t want to change it.(用过去分词短语作状语改写句子)
(2)Accustoming himself to the custom，he didn’t want to change it.(用现在分词短语作状语改写句子)
 
Run, swim, lift weights, do yoga—do something, because it's good for you. Many studies tell us that regular exercise not only helps our bodies but improves memory, and eases anxiety. But what is happening to the mind during workout to create all these benefits?
A new study from Sweden suggests that a specific protein found in trained muscles might contribute to exercise's mental benefits. This protein, the researchers found, might help our bodies process molecules that, if out of balance, can stress us and contribute to depression(萎靡不振). The findings were published in the journal Cell.
To test this, the researchers kept attacking some mice with flashing lights, loud noises and interrupting their sleep for weeks. Predictably, this treatment makes the mice show signs and biochemical markers of depression.
But not all the mice showed those signs. One group, specially raised to have high levels of a protein called PGC­1alpha1 (the one in trained muscles), did not show those depression signs. PGC­1alpha1 increases production of an enzyme that breaks down a chemical called kynurenine. Kynurenine helps the body respond to an activated immune system(活性免疫系统), but it also plays a role in depression.
“Our original research assumption was that trained muscle would produce a substance(物质) with beneficial effects on the brain，” Jorge Ruas of the Karolinska Institute told Forbes.com. “We actually found the opposite: well­trained muscle produces an enzyme that removes harmful substances away from the body.”
This study was in mice, but it lines up nicely with all the other lines of evidence that exercise is good for mental health. 
1．According to the study, which of the following is bad for your mental health?
A．Protein.     B．Molecule.         C．Enzyme.         D．Kynurenine.
2．What conclusion have the researchers drawn from the study?  
A．Unbalanced exercise leads you to depression.
B．Well­fed mice survive better though being ill­treated.
C．Trained muscle produces a substance good for brain.
D．Regular exercise helps to clear rubbish away from body.
3．According to the last paragraph, the result of the study is ________.
A．reliable          B．doubtful           C．predictable       D．ambiguous
4．What's the main idea of the passage?
A．Why do you need regular exercise?
B．What matters most for your body?
C．How does exercise help your brain?
D．Why are mice chosen for the study?

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