| I | discover |
|---|---|
| you | discover |
| he/she/it | discovers |
| we | discover |
| you | discover |
| they | discover |
| I | discovered |
|---|---|
| you | discovered |
| he/she/it | discovered |
| we | discovered |
| you | discovered |
| they | discovered |
| I | have | discovered |
|---|---|---|
| you | have | discovered |
| he/she/it | has | discovered |
| we | have | discovered |
| you | have | discovered |
| they | have | discovered |
| I | had | discovered |
|---|---|---|
| you | had | discovered |
| he/she/it | had | discovered |
| we | had | discovered |
| you | had | discovered |
| they | had | discovered |
单语范例（未经PONS编辑处理）
Oil was discovered in the 1930s and production has ended, though there have been efforts to start pumping again.
en.wikipedia.org During the mid-1950s it was discovered that the load-bearing wood in the steeple was warping and rotting.
en.wikipedia.org However, when he discovered the twist, he once again flew into a rage and refused to be the team's servant.
en.wikipedia.org He discovered his passion for music when he was in the seventh grade.
en.wikipedia.org He discovers that the shuttle is equipped with a neural interface.
en.wikipedia.org