| 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）
The research group discovered that oleoyl-estrone levels correlated with bodyfat stores except for obese organisms where there was less oleoyl-estrone circulating than would be predicted based on bodyfat levels.
en.wikipedia.org The family tree was investigated in detail by enthusiastic groups who sometimes discovered aunts, uncles and cousins never known to each other before.
en.wikipedia.org He discovered a gateway with a bugle hanging from a golden cord.
en.wikipedia.org In 2000, a public convenience from the mid 18th century, arguably the oldest of the city, was discovered under the ramps following an archaeological excavation.
en.wikipedia.org Afterward, he discovered he had cracked three ribs.
en.wikipedia.org