| | 一般时 | 进行时 | 完成时 | 完成进行时 |
| 现在 | study studies | am studying is studying are studying | have studied has studied | have been studying has been studying |
| 过去 | studied | was studying were studying | had studied | had been studying |
| 将来 | shall study will study | shall be studying will be studying | shall have studied will have studied | shall have been studying will have been studying |
| 过去将来 | should study would study | should be studying would be studying | should have studied would have studied | should have been studying would have been studying |

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