学英语的同学经常容易被时态困扰，举个栗子，大家是不是秒懂。
——吃过了吗？
——正在吃。
——我马上要去吃。
有木有共鸣！
以时间划分，我们先将12种时态分为3类：表示现在的、过去的和将来的。
Simple Present Tense
一般现在时
表示没有被强调为持续的或非持续的动作，用于描述习惯、客观事实、不会随时间、外界而发生改变的情况等。
Structure: Base verb (+ es/es for third person):
Example: 1) I play game every day. 2) He studies in school.
Present Continuous Tense
现在进行时
表示现在正在进行中的动作。
Structure: is/am/are + present participle:
Example: 1) I am playing game. 2) He is studying in college.
Present Perfect Tense
现在完成时
表示现在已经完成的动作。
Structure: Has/have + past participle:
Example: I have finished my home work.
Present Perfect Continuous Tense
现在完成进行时
表示已经结束的持续一段时间的动作。
Structure: Has/have + been + present participle:
Example: 1) I have been finishing my home work for the last two hours.
2) He has been studying in school since his childhood.
Simple Past Tense
一般过去时
表示过去曾经有过的状态或发生过但已经结束的动作。
Structure: Verb+ed or irregular verb:
Example: 1) You played the game. 2) He read the newspaper.
Past Continuous Tense
过去进行时
表示过去某个时间正在进行中的动作。
Structure: Was/were + present participle:
Example: 1) I was reading newspaper. 2) He was going to Karachi.
Past Perfect Tense
过去完成时
表示过去某个时间已经完成的动作。
Structure: Had + past participle:
Example: 1) I had finished my home work. 2) He had completed his task.
Past Perfect Continuous Tense
过去完成进行时
表示过去某个时间点已经结束的持续一段时间的动作。
Structure: Had + been + past participle:
Example: 1) I had been finishing my home work for 50 minutes.
2) He had been playing game since morning.
Simple Future Tense
一般将来时
表示现在还未发生，在将来会发生的动作，句式中经常包含will，shall等词。
Structure: Will/shall+verb
Example: 1) I shall go to my home town. 2) He will complete his task.
Future Continuous Tense
将来进行时
表示将来某个时间正在进行中的动作。
Structure: Will be + present participle
Am/is/are + going to be + present participle:
Example: I will be watching the news at 9pm. / I am going to be watching the news at 9pm.
Future Perfect Tense
将来完成时
表示将来某个时间已经完成的动作。
Structure: Will have + past participle
Am/is/are + going to have + past participle
Example: I will have played the game. / I am going to have played the game.
Future Perfect Continuous Tense
将来完成进行时
表示进行中且会在将来某个时间点结束的动作。
Structure: Will have been + present participle
Am/is/are + going to have been + present participle:
Example: I will have been watching the news for over ten minutes before you join me. / I am going to have been watching the news for over ten minutes before you join me.
现在你能分清12种时态了吗？如果还不清楚的话，下面几张图送给你。
