• 语法专项提升 •冠词可分为不定冠词、定冠词和零冠词三种。•(1) 用于coffee , food , tea , fruit , fog , rain, snow , wind 等物质名词前,表示“一种,一杯,一场”之意。•A heavy rain fell yesterday. 昨天下了一场大雨。•I would like a coffee and two beers.• 我想喝一杯咖啡和两杯啤酒。•(2) 用于某些抽象名词前,表示具体的人或事。•We regard him as a danger to society.•我们认为他是社会的一个危害分子。•Of her plays , three were successes and one was a failure.•她的戏剧中,三个是成功的,一个是失败的。•(3) 用于专有名词之前表示类似的一个或某一个。•Hi , John.A Mr Smith is waiting for you outside.( = a certain)•嗨!约翰。一个叫史密斯的先生在外面等你。•He wanted to be a Bill Gates. 他想成为像比尔 · 盖茨那样的人。•(4) 用于固定词组、短语中:•have a cold ; have a good/happy time; have a gift for ; have a word with ;keep a diary ; in a hurry ; once in a while; at a loss ; for a while ; once upon a time ; all of a sudden ; tell a lie ; do sb.a favor ; get an education ; at a distance ;have a population of ; a waste of ; a collection of ; a matter of 等。•He was at a loss at the news. 听到这个消息,他不知所措。•Tom , I want to have a talk with you.汤姆,我想和你谈谈。•After all , what you have just mentioned is not a matter of life and death. 毕竟,你刚才提到的不是一个生死攸关的问题。•(5) 在表示季节、月份、日期、三餐等的名词前有修饰词时。•We had a very cold winter last year.•去年我们度过了一个寒冷的冬天。•(6) 不定冠词 a 或 an 用于形容词最高级前无比较含义,表示程度,意为“很,非常”。•As far as I know , he is a most wise man.•据我所知,他是一位非常英明的人。•(7) 不定冠词 a 或 an 用于序数词前,表示“再,又”。•Would you like a second cup of tea ?你还想喝杯茶吗?•Can you give me a second chance , please ?...