英语的 16 种时态英语共有十六种时态，其表现形式如下(以 study 为例)一般时进行时完成时完成进行时现在study studiesam studying is studying are studyinghave studied has studiedhave been studying has been studying过去studiedwas studying were studyinghad studiedhad been studying将来shall study will studyshall be studying will be studyingshall have studied will have studiedshall have been studying will have been studying过去将来should study would studyshould be studying would be studyingshould have studied would have studiedshould have been studying would have been studying时态（ Tense ）是表示行为、动作和状态在各种时间条件下的动词形式。因此，当我们说时态结构的时候，指的是相应时态下的动词形式。1. 一般现在时英语时态分为16 种：一般现在、一般过去、一般将来、过去将来时，以及这四者的进行时、完成时和完成进行时。用法： A) 表示现在发生的动作、情况、状态和特征。B) 习惯用语。C) 经常性、习惯性动作。例： He always helps others. （他总是帮助别人。）D) 客观事实和普遍真理。尤其要注意，如果前后文不是一般现在时，则无法保持主句、从句时态一致。E) 表示一个按规定、 计划或安排要发生的动作，（仅限于某些表示“来、去、动、停、开始、结束、继续”等的动词）可以与表示未来时间的状语搭配使用。常见的用法是：飞机、火车、轮船、汽车等定期定点运行的交通方式。例： The next train leaves at 3 o'clock this afternoon. （下一趟火车今天下午3 点开车。）How often does this shuttle bus run? （这班车多久一趟？）F) 在时间和条件状语从句里经常用一般现在（有时也用现在完成时）表示将来事情。例： When you have finished the report, I will have waited for about 3 hours. （等你完成这份报告的时候，我就已经等了将近3 个小时了。 ）2. 现在进行时 (be doing)用法： 现在正在进行的动作。3. 现在完成时 (have done)用法： A) 表示动作到现在为止已经完成或刚刚完成。例： I bought a new house, but I _________ my old one yet, so at the moment I have two houses. A) didn't sell B) sold C) haven't so...
