英语的4时4态
时：动作发生的时间（现在，过去，将来，过去将来）
态：动作的属性（一般情况，正在进行，还是已经完成，或者完成进行）
基本逻辑框架
| 时\态 | 一般 | 进行 | 完成 | 完成进行 |
| 现在 | 一般现在 | 现在进行 | 现在完成 | 现在完成进行 |
| 过去 | 一般过去 | 过去进行 | 过去完成 | 过去完成进行 |
| 将来 | 将来一般 | 将来进行 | 将来完成 | 将来完成进行 |
| 过去将来 | 过去将来一般 | 过去将来进行 | 过去将来完成 | 过去将来完成进行 |
动词的表现形式
| 时\态 | 一般 | 进行 | 完成 | 完成进行 |
| 现在 | study/studies | am/is/are studying | has/have studied | has/have been studying |
| 过去 | studied | was/were studying | had studied | had been studying |
| 将来 | will study | will be studying | will have studied | will have been studying |
| 过去将来 | would study | would be studying | would have studied | would have been studying |
一般
| 时\态 | 一般 | 定义 | 动词 | |
| 现在 | 一般现在 |
1. 表示客观存在/永恒真理，不受时间限制 2. 表示现在的状态，情况（一段时间之内持续的状态） 3. 表示习惯性，反复发生的动作（经常和频率副词always, often, usually连用， 通常出现be后动前) 4. 表示正在发生的动作（解说体育赛事,演示说明） 5. 表示将来发生的动作 |
study/studies |
It rains in summer. A rolling stone gathers no moss. (滚石不生苔） The sun rises in the east. Knowledge is power.
They study at the same university. He is a lawyer. The soup tastes great. He speaks four languages. You look terrific today.
He gets up at 6:30 in the morning. She is always on time for her class. My father doesn't smoke. Do you often listen to the morning news? I usually go to work by subway.
Bob takes the ball forward quickly, passes it to John; John shoots and yes, it's a goal!. Look, I now take this end of the rope, place it under the bottle, and I put the other end... Here comes the bus. (Here, there之后，表示动作正在发生) There goes the bell.
I will let Bob know if I see him tomorrow. (条件状语从句， 虚拟语气中条件从句时态往前推一个时态，本来是将来，往前推一个时态，应该是现在 If I see) He will talk about it with you when you meet. (时间状语从句) The plane leaves in 30 minutes. (表示按规定，计划会发生的事情) I hope/bet that you get better soon. (特殊句式) I'll make sure/make certain/see to it this doesn't happen again. (特殊句式) |
| 过去 | 一般过去 | studied | ||
| 将来 | 将来一般 | will study | ||
| 过去将来 | 过去将来一般 | would study |
进行
完成
完成进行
标签：时态,studying,study,过去,will,将来,完成 From： https://www.cnblogs.com/hongten/p/16894366.html