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