| 展示 (Present) "concern" | I | concern | |
| 现在进行时 (Present Continuous) "concern" | I | am concerning | |
| 一般过去时 (Simple past) "concern" | I | concerned | |
| 过去进行时 (Past Continuous) "concern" | I | was concerning | |
| 现在完成 (Present perfect) "concern" | I | have concerned | |
| 现在完成进行时 (Present perfect continuous) "concern" | I | have been concerning | |
| 过去完成时 (Past perfect) "concern" | I | had concerned | |
| 过去完成时 (Past perfect continuous) "concern" | I | had been concerning | |
| 未来 (Future) "concern" | I | will concern | |
| 将来进行时 (Future continuous) "concern" | I | will be concerning | |
| 未来完美 (Future perfect) "concern" | I | will have concerned | |
| 未来持续完善 (Future perfect continuous) "concern" | I | will have been concerning |