ago与before的例句
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篇1:ago与before的例句
ago 和before的'区别:
1、意思不同
ago 表示“从现在起若干时间以前”。
before 表示“从过去某时起若干时间以前”。
2、词性不同
ago只能作副词。
例句:
She left England three days ago.
她三天前离开了英格兰。
before既可作副词又可作介词和连词。
例句:
Please close the window before you leave.
离开前请关好窗户。(连词)
3、后接单词不同
ago常与动词一般过去式连用。
例句:
His grandfather died two years ago.
他的外公两年前去世了。
before常与过去完成式连用。
例句:
I had finished the work two days before.
两天前我就已经完成了工作。
篇2:ago before的区别例句
用法:
一、表达意思不同
1、ago:以前;以前的
2、before:在……之前,先于;在……面前;面对(法院、法庭或其他官方机关)并受审;(宁愿……)不愿;在……以前;到……为止;以免,不然;(宁可……而)不愿;以前,过去,已经
二、词性不同
1、ago:通常在句中用作副词、名词和形容词。
2、before:通常在句中用作介词、连词、副词。
三、用法不同
1、ago:ago表示“从现在起的'若干时间以前”,意思是“距今……以前”,需和过去时或过去进行时连用。
2、before:before泛指“从过去起的若干时间以前”,意思是 “距过去某时……以前”“与其……(毋宁)”,常和完成时连用,尤其在间接引语中。
例句:I visited him three days ago,but his mother said he had gone to Beijing two days before.我三天前去拜访他,但是他的妈妈说他两天前就去北京了。
篇3:详解ago与before的语法难点
1. before还是ago?
要说:
I came to Manchester two weeks ago.I came to Manchester two weeks ago.
不要说:
I came to Manchester before two weeks.
Use “past time + ago”
ago用于一般过去时,例如:
10 years ago, a long time ago, a few weeks ago, a couple of days ago
Use “before + action / event”
before用于动作或事件前,例如:
before you left, before we start, before lunch
2. fall 还是reduce?
These two words are the opposites of 'rise' and 'raise':
它们是rise和raise的反义词:
something falls (e.g. the price fell)
somebody reduces something (e.g. the company reduced the price)
You will probably use 'fall' to describe numbers on a graph or chart for IELTS Writing Task 1:
在雅思短作文中,你可以用fall来描述图表里的数字。
In 2008, the number of customers fell. (verb, past)
这里的fall是动词,过去时。
There was a sharp fall in Internet usage. (noun)
这里的fall是名词。
'Reduce' and 'reduction' are probably more useful for Writing Task 2:
reduce和reduction在长作文中更有用:
We need to reduce the amount of pollution from exhaust fumes. (verb)
reduce,动词。
Recycling leads to a reduction in waste. (noun)
reduction,名词。
3. because还是because of?
Compare these two sentences:
比较下列两个句子:
I stayed at home because the weather was bad.
I stayed at home because of the bad weather.
The important difference is the use of the word 'was' in the first sentence. After 'because', you need a subject and a verb (e.g. the weather was). After 'because of', we don't use a verb, only a noun, nouns or noun phrase.
重要的区别在于第一句里使用了word。Because后面需要加主语和动词(例如the weather was)。Because of 后面不需要动词,只要一个或多个名词,又或者名词词组就可以了。
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