三年级下册 Unit1

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conj. 和, 与【计】 与相关词组: and yet and all that and others and so on and that and then and what not
◆记忆方法一:
联想方式:a:一;nd:牛顿
记忆方法:一个牛顿和另外一个牛顿,都不是真的牛顿。
  • 比较and和or

    1) 并列结构中,or通常用于否定句,and用于肯定句。

    2) 但有时and 也可用于否定句。请注意其不同特点:
    There is no air or water in the moon.
    There is no air and no water on the moon.
    在否定中并列结构用or 连接,但含有两个否定词的句子实际被看作是肯定结构,因此要用and。

    典型例题
    ---I don't like chicken ___ fish. 
    ---I don't like chicken, ___ I like fish very much.
    A. and; and  B. and; but C. or; but D. or;and
    答案C。否定句中表并列用or, but 表转折。

    判断改错:
    (错) We will die without air and water.
    (错) We can't live without air or water.
    (对) We will die wi查看详情更多>>
and/or

Come early tomorrow,and you will see him.明天早点来,你就会见到他。
Come early tomorrow,or you won't see him.明天早点来,否则你就会见不到他。
<辨析>上述两句都是“祈使句+陈述句”的句型。陈述句前既可用 and 也可用 or。and 意为“那么”,用于陈述句的句意是肯定的,or 意为“要不然”,“否则”,用于陈述句的句意是否定的。

She kept smoking and drinking wine although she was pregnant.
尽管她怀孕了,但是她仍在抽烟喝酒。


Babies rely on their parents for food and care.
宝宝们靠爸妈提供食物和照顾。


Plug in the cables and you can access the Internet.
把线插好,你就可以联网啦。


She is a good housewife. She always stays home to cook and clean.
她是个优秀的家庭主妇。她总是呆在家里做饭打扫。

The United kingdom includes Northern Ireland and Wales.

联合王国包括北爱尔兰和威尔士。


※Money is not the root of all eviles as is usually claimed, what is the root of all evils is the lust for money, that is the excessive, selfish and greedy pusuit of mnoey.——Nathaniell Hawthorn, American writer  金钱并非像平常说的那样是万恶之源。而对金钱的贪图,既对金钱过分的、自私的、贪婪的追求,才是一切邪恶的根源。美国作家霍桑.N.  
※Command your man and do it yourself. 要求部下做到,自己也要做到.
※Fame like a river is narrowest at its source and broadest afar off. 名誉像条河,源头最狭窄,远处最宽阔。
※Fame like a river is narroest at its source and broadest afar off. 名誉象条河,源头最狭窄,愈流愈宽阔.
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