时态结构总表
| 时态 | 结构 | 常见标志词 | 例句 |
|---|---|---|---|
| 一般现在时 | 主语 + do / does | always, usually, often, every day | She gets up at six. |
| 一般过去时 | 主语 + did | yesterday, last week, … ago | He visited Beijing last year. |
| 一般将来时 | will + do ／ be going to + do | tomorrow, next week, soon | We will leave at eight. |
| 现在进行时 | am / is / are + doing | now, right now, Look! | They are playing soccer now. |
| 过去进行时 | was / were + doing | at that time, at eight yesterday | She was cooking when I arrived. |
| 现在完成时 | have / has + done | already, just, yet, ever, since | I have never seen a fox. |
| 过去完成时 | had + done | by the time, before + 过去时 | He had already left before I arrived. |
| 过去将来时 | would + do ／ was going to + do | 用在宾语从句（主句是过去时） | He said he would help me. |
| 现在完成进行时 | have / has been + doing | for + 一段时间，since + 时间点 | I have been waiting for half an hour. |