卫生类职称英语考试语法(9)
2015-03-03 16:19 来源:医学教育网
卫生类职称英语考试语法:
1、一般现在时 主要用来表示人、事物的现在状况和特点;表示经常或习惯性的动作,句子中常有often,always,from time to time 等时间状语; 表示客观规律和永恒真理等。
He usually goes to work at 7 o'clock every morning.
She has a brother who lives in New York.
The earth goes around the sun.
Guangzhou is situated in the south of China.
考点一:表示永恒的真理,即使出现在过去的语境中,仍用一般现在时。如:I learned that the earth goes around the sun when I was in primary school.
考点二:在时间和条件状语从句中,代替一般将来时;常用的引导词有:时间:when,until,after,before,as soon as,once,the moment/the minute,the day; 条件:if,unless,provided.
If he accepts the job,he will get more money soon.
考点三:在make sure (certain),see to it,mind,care,matter +宾语从句,从句用一般现在时代替一般将来时。
So long as he works hard,I don't mind when he finishes the experiment.
只要他努力工作,我不介意他什么时候做完试验。
考点四:在the more… the more … (越……越……) 句型中,若主句是一般将来时,从句通常用一般现在时。
The harder you study,the better results you will get.
2、现在进行时
表说话时或目前一段时间内正在进行的活动:或表感情色彩,加强语气。与频率副词,如always,constantly,continually,again等连用表示说话人的某种感情色彩(赞叹、厌烦、埋怨等)
We are having English class.
The house is being built these days.
The little boy is always making trouble.
考点一:在时间状语或条件状语从句中表示将来正在进行的动作。 Look out when you are crossing the street.
Don't wake him up if he is still sleeping at 7 tomorrow morning.
考点二: 表示在最近按计划或安排要进行的动作(这时多有表示将来的时间状语)
Marry is leaving on Friday.
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