详解ago与before的语法难点3

时间:2022-09-22 06:18编辑:admin来源:未知当前位置:理性作文网 > 初二选择作文

  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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