一、一般现在时
表示经常性或习惯性动作 - She always wakes up at 6:30 AM.
- The sun rises in the east every day.
表示客观真理或科学事实
- Water boils at 100°C.
- The Earth orbits the Sun.
表示现在的状态或特征
- He looks tired today.
- The weather is sunny and warm.
表示将来计划或安排
- We'll meet at 7 PM tonight.
- The meeting starts at 9 AM tomorrow.
二、一般过去时
描述过去某个具体时间点的动作
- I visited London last year.
- They watched a movie on Friday night.
表示过去习惯性动作
- He played soccer every afternoon.
- She cooked dinner for us last Saturday.
表达过去完成时态
- By the time we arrived, the movie had started.
- I had finished my homework before dinner.
三、一般将来时
表示按计划或安排发生的动作
- The train leaves at 8 AM tomorrow.
- We'll call you when we arrive.
表示将来某个时间点的动作
- The company will launch the new product next quarter.
- I'll travel to Japan in the summer.
四、现在进行时
描述当前正在进行的动作
- I'm reading a book right now.
- The meeting is being held in the conference room.
表示现阶段持续的状态
- The cake is baking in the oven.
- The company is expanding to new markets.
五、过去进行时
描述过去某个时间点正在进行的动作
- I was studying when my phone rang.
- They were arguing when the power went out.
表示过去某段时间内持续的动作
- She was writing a letter all afternoon.
- The storm was raging when we arrived.
六、现在完成时
强调过去动作对现在的影响
- I have finished my degree and started a job.
- The project has been completed ahead of schedule.
表示过去开始并持续到现在的动作
- They have lived in this city for ten years.
- I have known him since childhood.
七、过去将来时
描述从过去的角度看将要发生的动作
- He said he would call you when he arrived.
- The letter arrived just as we were leaving.
八、将来完成时
表示在将来某个时间点之前完成的动作
- By the time we get to the station, the train will have left.
- She will have finished her thesis by the end of the semester.
补充说明
时间状语： 不同时态常搭配特定时间状语，如一般现在时与频度副词（always, every day），过去时与时间点副词（yesterday, last week），将来时与时间状语从句（tomorrow, next week）等。 特殊用法
> The scientist proved that the earth is round.
通过以上例句，可系统掌握英语八种时态的用法与结构。
