一、一般现在时

结构

- 谓语动词为原形（含be动词时需根据主语调整）

- 例如：

- I eat breakfast every day.

- The weather is sunny today.

时间状语

- always, usually, often, sometimes, every day/week/month, once a week, on Sundays, at 8 o'clock等

- 例如：

- She always wakes up at 6 AM.

- They play football every afternoon.

二、一般过去时

结构

- 谓语动词为过去式（如walked, ate）

- 例如：

- He visited London last summer.

- We watched a movie last night.

时间状语

- yesterday, last week, ago, in 1999, just now, at the age of 5, one day, long ago, once upon a time等

- 例如：

- The meeting started at 3 PM yesterday.

- The letter arrived just now.

三、现在进行时

结构

- 谓语动词为“be动词（am/is/are）+现在分词（-ing）”

- 例如：

- She is reading a book right now.

- They are planning a trip next month.

时间状语

- now, at the moment, these days, right now, currently等

- 例如：

- The meeting is still going on.

- I can't finish my homework right now.

四、过去进行时

结构

- 谓语动词为“be动词（was/were）+现在分词（-ing）”

- 例如：

- He was writing an email when the phone rang.

- They were having dinner when the power went out.

时间状语

- at 7 PM, last night, during the movie, while...等

- 例如：

- I was studying when the exam started.

- She was painting when the guests arrived.

五、现在完成时

结构

- 谓语动词为“have/has+过去分词”

- 例如：

- I have finished my homework.

- They have lived in this city for five years.

时间状语

- already, already finished, just now, by now, ever since, for+时间段等

- 例如：

- The project is already completed.

- She has never been to Japan.

六、一般将来时

结构

- 谓语动词为“will+动词原形”

- 例如：

- I will call you tomorrow.

- They will launch the new product next quarter.

时间状语

- next day, tomorrow, in+时间（如in 2025）， soon, shortly after等

- 例如：

- The meeting will start at 10 AM tomorrow.

- We will travel to Japan soon.

补充说明

完成进行时（have/has been+现在分词）和 过去完成时（had+过去分词）未在六大时态中单独列出，但可通过“be动词+现在分词”和“be动词+过去分词”结构表示。

时态选择需根据动作发生的时间（过去/现在/将来）和是否持续（进行/完成）来决定。