類型:英語詞匯
時(shí)間:2022-09-05
點(diǎn)擊量800
and和or是初中英語的常見并列連詞,用于引導(dǎo)兩個(gè)并列的詞、詞組或句子。and的基本意思是“和,與”,or的基本意思是“或者,還是”。它們的用法區(qū)別如下:
1. 并列結(jié)構(gòu)中,and用于肯定句,or通常用于否定句表示“和,與”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 表轉(zhuǎn)折。
2. or用在選擇疑問句中,意為“或者,還是”。例如:
Is he a
doctor or a
teacher? 他是醫(yī)生還是教師?
Did you do your
homework or
watch TV last
night?你昨晚做作業(yè)還是看電視了?
Are they
singing or
reading English? 他們是在唱歌還是在讀英語?
3. or在句型“祈使句+or+陳述句”中,表示在以祈使句為條件下的相反假設(shè),or意為“否則,要不然”。例如:
Work hard,or you will fall
behind.你要努力學(xué)習(xí),否則會(huì)落后。
I must work hard, or I'll fail in the exam. 我要努力學(xué)習(xí),否則考試要不及格了。
4.
either…or 意思為"或者……或者……"。注意謂語動(dòng)詞的主謂一致采用就近原則。例如:
Either you or I am
right. 不是你對(duì),就是我對(duì)。
5. or在“either…or…”結(jié)構(gòu)中,意為“要么……要么……”。連結(jié)的并列成份可在句中作主語、表語、謂語、賓語等。例如:
Either she or I am right.不是她對(duì)就是我對(duì)。(連接主語)
The
shoes in the shop were either too big or too
small for me. 店里的鞋對(duì)我來說不是太大就是太小(連接表語)
He either does his homework or
watches TV on Sundays.他星期天要么做作業(yè),要么看電視。(連接謂語)
We play either
football or
basketball in the
afternoon.下午我們不是踢足球就是打籃球。(連接賓語)
6. or表示不確切、模糊的陳述。例如:
This
story happened five or six
years ago. 這個(gè)故事發(fā)生在四、五年前。
Is the
street straight? More or less. 這棵樹直嗎?差不多。
She will find that she was
wrong sooner or
later.她遲早會(huì)發(fā)現(xiàn)她是錯(cuò)的。
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