and与or的用法区别
今天和大家一起学习一下and和or的用法,快来一起学习吧,下面小编就和大家分享,来欣赏一下吧。
and 与 or的用法区别,你get了吗?
小伙伴们,请看上面这道题,Ido not like Music and Science. 句中包含一个错误,究竟错在什么地方呢?
我们知道,and与or都是连词,但也有区别,一般说来,and用于肯定句中,表示 “和…/并且”,比如 My brother and I both like English. ,但是在相应的否定句中,不能用and表示“和/并且”,而是用“or”(或者),比如:I don’t like English or Maths. 这句可以翻译为:英语和数学我都不喜欢,或者翻译为:我不喜欢英语,也不喜欢数学。
以下为更多例子:
1. and和or在否定句中的用法比较
在通常情况下,在肯定句中用and,相应的否定句中则用 or。如:
He has brothers and sisters. 他有兄弟姐妹。
He has no brothers or sisters. 他既没有兄弟也没有姐妹。
They sang and danced. 他们既唱歌又跳舞(即载歌载舞)。
They didn’t sing or dance. 他们既没有唱歌也没有跳舞。
但是,在某些特殊情况下,即使是否定句也得用and。如:
Drivers must not drink and drive. 司机不准酒后驾车。
若将此句中的 and 改为 or,反而不合理了:
Drivers must not drink or drive. 司机不准开车或饮酒。
2. and和or在祈使句中的用法比较
and 和 or 均可用于祈使句后表示结果(即暗示后面的陈述句为前面祈使句的结果),注意两者意思不同:and 意为“那么”,or 意为“否则”。如:
Study hard, and you will pass the exam. 努力学习,你考试会及格的。
Study hard, or you will fail the exam. 努力学习,否则你考试会不及格。
这类结构通常可转换成含条件状语从句的复合句,如上面两句可改写成:
If you study hard, you will pass the exam. 你若努力学习,考试会及格的。
If you don’t study hard, you will fail the exam. 你若不努力学习,考试会不及格。
注意,由于 or 的意思是“否则”,所以当它前面的祈使句改写成条件状语从句时,谓语动词要用否定式。又如:
Hurry up, or you’ll be late. 快点,否则你就要迟到了。
=If you don’t hurry, you’ll be late. 你若不快点,你就要迟到了。
【英语小课堂】and和or在句中的正确用法和区别,你掌握了么?
and和or是初中英语的常见并列连词,用于引导两个并列的词、词组或句子。and的基本意思是“和,与”,or的基本意思是“或者,还是”。它们的用法区别如下:
1. 并列结构中,and用于肯定句,or通常用于否定句表示“和,与”之意。
There are some students and teachers on the playground.
There is no air or water in the moon.
---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。
2. or用在选择疑问句中,意为“或者,还是”。例如:
Is he a doctor or a teacher? 他是医生还是教师?
Did you do your homework or watch TV last night?你昨晚做作业还是看电视了?
Are they singing or reading English? 他们是在唱歌还是在读英语?
3. or在句型“祈使句+or+陈述句”中,表示在以祈使句为条件下的相反假设,or意为“否则,要不然”。例如:
Work hard,or you will fall behind.你要努力学习,否则会落后。
I must work hard, or I'll fail in the exam. 我要努力学习,否则考试要不及格了。
4. either…or 意思为"或者……或者……"。注意谓语动词的主谓一致采用就近原则。例如:
Either you or I am right. 不是你对,就是我对。
5. or在“either…or…”结构中,意为“要么……要么……”。连结的并列成份可在句中作主语、表语、谓语、宾语等。例如:
Either she or I am right.不是她对就是我对。(连接主语)
The shoes in the shop were either too big or too small for me. 店里的鞋对我来说不是太大就是太小(连接表语)
He either does his homework or watches TV on Sundays.他星期天要么做作业,要么看电视。(连接谓语)
We play either football or basketball in the afternoon.下午我们不是踢足球就是打篮球。(连接宾语)
6. or表示不确切、模糊的陈述。例如:
This story happened five or six years ago. 这个故事发生在四、五年前。
Is the street straight? More or less. 这棵树直吗?差不多。
She will find that she was wrong sooner or later.她迟早会发现她是错的
because与because of的用法比较
一、从词性上看
because 是连词,其后接句子;because of 是复合介词,其后接名词、代词、动名词、what 从句等。如:
I didn’t buy it because it was too expensive. 我没有买是因为它太贵了。
He is here because of you (that). 他为你(那事)而来这里。
He lost his job because of his age. 由于年龄关系他失去了工作。
We said nothing about it, because of his wife’s being there. 因为他妻子在那儿,我们对此只字未提。
He knew she was crying because of what he had said. 他知道她哭是因为他说的话。
注意:because of 之后可接 what 从句,但不能接 that 从句或没有引导词的句子。如:
他因病未来。
误:He didn’t come because of he was ill.
误:He didn’t come because of that he was ill.
正:He didn’t come because he was ill.
正:He didn’t come because of his illness.
比较以下同义句:
他离开了这家公司,是因为老板在会上讲的话。
正:He left the company because of what the boss said at the meeting.
正:He left the company because of the thing that the boss said at the meeting.
我不能因为有个家就停止斗争。
正:I can’t stop fighting because I have a family.
正:I can’t stop fighting because of having a family.
二、从用法上看
because 所引导的从句除用作原因状语外,还可用作表语。如:
It is because he loves you. 那是因为他爱你。
而复合介词 because of 所引导的介词短语通常用作状语而不用作表语。如:
他因雨缺席。
误:His absence was because of the rain.
正:His absence was due to the rain.
正:He was absent because of the rain.
但是有时若主语是代词(不是名词),也可以用 because of 引出的短语作表语。如:
It is just because of money. 那只是因为钱的原因。
That was because of his sickness. 那是因为他生病的原因。
elder,eldest与older,oldest的用法区别
区别一:old 通常的比较级和最高级分别是 older, oldest。可用于人或物,可用作表语或定语,可与 than 连用。如:
He is older than me. 他比我年纪大。
I'm two years older than he. 我比他大两岁。
The cathedral is the oldest building in the city. 这座教堂是城里最古老的建筑。
区别二:elder 与 eldest 主要用于家人之间表明长幼关系。通常只用于人而不用于物,只用作定语而不用作表语,也不与 than 连用。如:
This is my eldest son (daughter). 这是我的大儿子(女)。
His elder brother (sister) works in a clothing factory. 他哥哥(姐姐)在一家服装厂工作。
注:在美国英语中,也可用 older, oldest 表示长幼关系。如:
older brother 哥哥 oldest daughter 最大的女儿
elder 与 eldest 的区别是:前者指两者中年纪较大的, 而后者指三者或三者以上的年纪最大的。如:
one's elder son 指两个儿子中年纪较大的一个
one's eldest son 指三个或三个以上的儿子中年纪最大的一个
区别三:elder 和 eldest 作为形容词,通常只能用作定语,不用作表语;但若不是用作形容词(即其后不接名词)而是用作名词,则可以用作表语(此时通常有冠词或物主代词修饰)。如:
Jim is my eldest. 吉姆是我最大的孩子。
I'm the eldest in the family. 我是全家年纪最大的。
He was the elder of the two sons. 他是两个儿子中较大的。
He is my elder by two years. / He is two years older than I. 他比我大两岁。
OTHER和ANOTHER的区别
1.the other意思为“(两个中的)另一个”,other+名词复数.表示“另一些”。
I have two books. One is Chinese, the other is Japanese.
2.others相当于“other+可数名词复数形式“,the others表示“其余的”。
Others may like the story.
The boy doesn't like his teacher. What about the others in the class.
3.another是“另一个”的意思,指多个东西的另一个,兼具名词和形容词性质。
I've lost my pen, so I bought another one.
4.another还有啊“再”的意思。
Would you like another cup of tea?
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