一、一般现在时

表示习惯性动作

- I usually wake up at 6 AM.

- The sun rises in the east.

表示客观事实或普遍真理

- Water boils at 100°C.

- Action speaks louder than words.

"主将从现"结构

- If it rains tomorrow, we will cancel the picnic.

二、一般过去时

表示过去某个时间发生的动作

- I visited the Eiffel Tower last year.

- They watched a movie on Friday night.

表示过去习惯性动作

- When I was a child, I lived in London.

- She played the piano every day before she moved.

三、现在进行时

表示现阶段正在进行的动作

- He is reading a book right now.

- We are having dinner at 7 PM.

表示将来动作（时间状语为now）

- I am flying to Japan next week.

- The meeting starts at 3 PM.

四、过去进行时

表示过去某个时间正在进行的动作

- We were watching TV when the power went out.

- She was painting when her friend called.

五、现在完成时

表示过去动作对现在的影响

- I have finished my homework already.

- The company has expanded to 10 countries.

表示过去动作的持续到现在的状态

- She has lived in New York for five years.

- They have known each other since childhood.

六、过去完成时

表示过去某一时间前已完成的动作

- By the time we arrived, the movie had started.

- He had finished his project before the deadline.

七、一般将来时

表示将来某个时间会发生的动作

- I will call you tomorrow.

- The company will launch the new product next quarter.

表示将来动作的安排

- We shall travel to Japan in July.

- The meeting is scheduled for 10 AM.

八、过去将来时

表示从过去的角度看将要发生的动作

- I thought I would finish the task by noon.

- He expected to receive a letter before the holiday.

补充说明：

时间状语：

一般现在时常用always, usually, every day等；一般过去时用yesterday, last week等；现在进行时用now, right now等。

结构特点：

现在完成时：主语+have/has done

过去完成时：主语+had done

将来完成时：主语+will have done。

通过这些时态的灵活运用，可以准确表达不同时间背景下的动作与状态。