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不定代词在使用时应注意的问题解析大全
版块:教育培训   类型:普通   作者:clcfone   查看:215   回复:0   获赞:0   时间:2023-06-10 13:47:37

不定代词在使用时应注意的问题解析大全
英文中主要有这样一些不定代词:every, each, both, all, either, neither, one, none, little, few, many, much, other, another, some, any, no, 另外还有由 some, any, no 和 eve ry 构成的合成代词,如:somebody, anything, nothing等。
① both , either 和neither 
这三个词都可以用来指两个人或两件事物,但各自的意义都不相同:both表示"两个都"、either表示"两个中的任何一个"、 neither表示"两者都不……" 。它们在句中都分别可以作主语、宾语和定语,b oth还可以作同位语。
② all 
在谈到两个以上的人或事物时,或是不可数的事物时,我们都可以用all ;它在句中可以充当主语、宾语、定语和同位语。另外,all指不可数的事物时还可以作表语;有时还可作副词用,例如:
This is all he knew about it. (作表语)
这就是他了解 有关这件事的一切。
They were all covered with dust. (作副词)他们身上尽是尘土。
Her clothes were all wet.(作副词)她的衣服全湿了。
all 还可以用在一些词组中,如:
all day (整天) all night (整夜) all this(所有这些) 

all the year round (整年) all day long (一天到晚) all the time (一直) 

囧记单词
速记英语单词
单词不用记

③ each 和 every 
each和every 这两个词在中文里都有"每一个"的意思 ,但它们在句子里各自强调的侧重点却不同:every 从每一个个体着眼而强调"整体";而each却是把一些东西一个一个地加以考虑,强调"各个" 。every只能作 定语;each则可以作主语、宾语、定语和同位语。另外,every可用于[ every other (或every +数词 ) + 名词 ]的结构中,表示"每隔……"之意思:
every other day 每隔一天 every three years 每隔三年
every third year 每隔三年 every other line 每隔一行
every ten miles每隔十哩
④ one
作不定代词时有复数形式ones ,代替前面刚提到的人或事物以避免重复,还可以有自己的定语或冠词;另外还可以用来泛指人,例如:
This problem is a difficult one. 这个问题是个不好解决的问题。
I don't like colored envelopes. I like white ones. 我不喜欢花信封,我喜欢白的。
This film is not as good as the one we saw last week .这片子没有我们上周看的好。
Modesty helps one go forward, whereas conceit makes one lag behind.
(泛指)谦虚使人进步,骄傲使人落后。
⑤ some 与any 
some 与any都相当于"一些"之意,但意思并不强,因此汉译时常可省去"一些"这样的字眼。它们作定语时多,这时候some多用于肯定句,any多用于否定句、疑问句或条件句。在表示请求、建议、反问或是希望得到肯定回答的疑问句中,常用some而不用any。另外,some可与数词连用,表示"大约"的意思。如:
Could you mind buying me some envelopes on your way to school?  
你能在去上学的路上,帮我买几个信封吗?
Will you give me some paper? 请给我一点纸。
Some hundred teachers have moved into new houses. 约有百位教师搬进了新居。
The bridge was built some two hundred years ago. 这座桥大约建于两百年前。
⑥ few, a few ; little, a little 的用法
few和 a few以及 little和 a little 是两组差异相同词,但前一组用于可数名词,而后一组却用于不可数名词;另外few 与little都有"几乎没有"的否定意思,few用于可数名词,little用于不可数名词;a few与 a little 表示"几个或一点"的肯定意思,a few用于可数名词a little用于不可数名词。

Eyesight plays a very important role in our daily life. Every waking moment, the eyes are working to see the world around us. Over forty percent of Americans worry about losing eyesight, but it's easy to include steps into our daily life to ensure healthy eyes. Here are five suggestions for a lifetime of healthy eyesight:
·  Schedule yearly exams.  36        Experts advise parents to bring babies 6 to 12 months of age to the doctor for a careful check. The good news is that millions of children now can have yearly eye exams and following treatment, including eyeglasses.
· Protect against UV rays (紫外线). Long-term stay in the sun creates risk to your eyes. No matter what the season is, it's extremely important to wear sunglasses.
   37     
Give your eyes a break. Two-thirds of Americans spend up to seven hours a day using computers or other digital products.    38    Experts recommend that people practice the 20/20/20 rule: every 20 minutes, take a 20-second break and look at something 20 feet away.
·  39    As part of a healthy diet, eat more fruits and vegetables each day. Vitamins (维生素) C and E help protect eyesight and promote eye health.
·  Practice safe wear and care of contact lenses (隐形眼镜). Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing contact lenses, many are breaking the rules and putting their eyesight at risk.    40    Otherwise, you may have problems such as red eyes, pain in the eyes, or a more serious condition.
A. Eat your greens.
B. Eye care should begin early in life.
C. They can properly protect your eyes.
D. Stay in good shape by taking more vitamins.
E. Parents usually don’t care about their own eyesight.
F. Always follow the doctor’s advice for appropriate wear.
G. This frequent eye activity increases the risk for eye tiredness.

 
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