考生们在准备普通专升本考试的时候,语法知识点要重点进行学习,其中,考生们要搞清楚时态的内容,下面,小编主要介绍最常见的8大时态结构,供考生们先复习。
一般现在时
1、概念:表示经常发生的情况;有规律出现的情况;总是发生的;事实真理。
2.时间状语:Always,usually,often,sometimes,every week(day,year,month…),once a week(day,year,month…),on Sundays(on Mondays…),etc.
3.基本结构:主语+动词原形(如主语为第三人称单数,动词上要改为第三人称单数形式)
4.否定形式:主语+am/is/are+not+其他;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。
5.一般疑问句:把be动词放于句首;用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词。
eg:①It seldom snows here.这里很少下雪。②He is always ready to help others.他总是乐于帮助别人。③Action speaks louder than words.事实胜雄辩。
一般过去时
1.概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为。
2.时间状语:ago,yesterday,the day before yesterday,last week,last(year,night,month…),in 1989,just now,at the age of 5,one day,long long ago,once upon a time,etc.
3.基本结构:主语+动词的过去式或be的过去式+名词
4.否定形式:主语+was/were+not+其他;在行为动词前加didn't,同时还原行为动词。
5.一般疑问句:was或were放于句首;用助动词do的过去式did提问,同时还原行为动词。
eg:①She often came to help us in those days.那些天她经常来帮助我们。②I didn't know you were so busy.我不知道你这么忙。
一般将来时
1.概念:表示将要发生的动作或存在的状态及打算、计划或准备做某事。
2.时间状语:Tomorrow,next day(week,month,year…),soon,in a few minutes,by…,the day after tomorrow,etc.
3.基本结构:主语+am/is/are+going to+do+其它;主语+will/shall+do+其它
4.否定形式:主语+am/is/are not going to+do;主语+will/shall not do+其它
5.一般疑问句:be放于句首;will/shall提到句首。(首字母大写)
eg:①They are going to have a competition with us in studies.他们将在学习中与我们竞争。②It is going to rain.天要下雨了。
一般过去将来时
1.概念:立足于过去某一时刻,从过去看将来,常用于宾语从句中。
2.时间状语:The next day(morning,year…),the following month(week…),etc.
3.基本结构:主语+was/were+going to+do+其它;主语+would/should+do+其它
4.否定形式:主语+was/were+not+going to+do+其它;主语+would/should+not+do.
5.一般疑问句:was或were放于句首;would/should提到句首
eg:①He said he would go to Beijing the next day.他说他第二天要去北京。②I asked who was going there.我问,谁要去那里。