专升本英语备考不仅需要掌握大量词汇，一些基本语法时态也需要同学们掌握，下面是湖北专升本网整理的英语八大时态用法详解，赶紧get 起来吧！
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)等。
3. 基本结构：
（1）主语+ was / were / going to do sth
（2）主语+ would do sth
否定形式：
（1）主语+ was / were / not + going to do sth
（2）主语+ would + not + do sth
一般疑问句：
（1）was或were放于句首；
（2）would 提到句首。
4. 用法：
（1）“would + 动词原形”常表示主观意愿的将来。
如：He said he would come to see me. 他说他要来看我。
（2）“was / were + going to + 动词原形”常表示按计划或安排即将发生的事。
如：She said she was going to start off at once.
I was told that he was going to return home.
此结构还可表示根据某种迹象来看，很可能或即将发生的事情。
如：It seemed as if it was going to rain. 看来好像要下雨。
（3）come，go，leave，arrive，start等瞬时动词可用过去进行时表示过去将来的含义。
如：He said the train was leaving at six the next morning.
She told me she was coming to see me.
现在完成时
1. 概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始持续到现在并且有可能继续下去的动作或状态。
2. 时间状语：recently, lately, since, for, in the past few years等。
3. 基本结构：主语+ have / has + done +其他
否定形式：主语+ have / has + not +done +其他
一般疑问句：Have / Has +主语 + done +其他
4. since的三种用法：
（1） since +过去的一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。
如：I have been here since 1989.
（2） since +一段时间+ ago。
如：I have been here since five months ago.
（3）since +从句（一般过去时）。
如：Great changes have taken place since you left.
比较since和for
since 用来说明动作起始时间，for用来说明动作延续时间的长度。
如：We haven’t had any guests since we moved in here.
I have lived here for more than twenty years.
注意：并非有for 作为时间状语的句子都用现在完成时。
I worked here for more than twenty years. (我现在已不在这里工作。)
过去完成时
1. 概念：以过去某个时间为参照，在此以前发生的动作或行为，或在过去某动作之前已完成的动作，即“过去的过去”。
2. 时间状语：before, by the end of last year(term, month)等。
3. 基本结构：主语+ had done +其他
否定形式：主语+ hadn’t done +其他
一般疑问句：had置于句首。
4. 用法：
（1）用于told, said, knew, heard, thought等动词后的宾语从句中。
如：She said (that) she had never been to Paris.
（2）在过去不同时间发生的两个动作中，发生在先的动作用过去完成时；发生在后的动作用一般过去时。
如：When the police arrived, the thieves had run away.
（3）表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等用过去完成时表示“原本······，未能······”。
如：We had hoped that you would come, but you didn’t.
注意： had hardly… when ... 刚······就······。
如：I had hardly opened the door when he hit me. 我刚打开门，他就打了我。
had no sooner…than 刚······就······。
如：He had no sooner bought the car than he sold it. 他刚买了这辆车，转眼又卖了。
一般现在时
1. 概念：表示经常、反复发生的动作或行为及现在的某种状况。
2. 基本结构：
（1）主语+ be动词（is / am / are）+表语
（2）主语+ 行为动词的原形或单数第三人称形式+其他
否定形式：
（1）am / is /are + not；
（2）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，同时行为动词还原为原形。
3. 一般疑问句：
（1）把is / am / are动词放于句首；
（2）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。
4. 用法：
（1）表示经常性或习惯性的动作，常与表示频度的时间状语连用。
如：I leave home for school at 7 every morning.
（2）表示客观真理，客观存在或科学事实。
如：The earth moves around the sun.
（3）表示格言或警句。
如：Pride goes before a fall. 骄者必败。
注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。
如：Columbus proved that the earth is round.
（4）表示现在时刻的状态、能力、性格、个性等。
如：I don’t want so much.
Ann writes good English but does not speak well.
（5）一般现在时表示将来含义
① come, go, arrive, leave, start, begin, return的一般现在时可以表示将来，主要用来表示在时间上已确定或安排好的事情。
如：The train leaves at six tomorrow morning.
— When does the bus star?
— It stars in ten minutes.
② 在时间或条件状语句中。
如：When Bill comes (不是will come), ask him to wait for me.
I’ll write to you as soon as I arrive there.
