在《PONS词典》中的词汇
| I | keep down |
|---|---|
| you | keep down |
| he/she/it | keeps down |
| we | keep down |
| you | keep down |
| they | keep down |
| I | kept down |
|---|---|
| you | kept down |
| he/she/it | kept down |
| we | kept down |
| you | kept down |
| they | kept down |
| I | have | kept down |
|---|---|---|
| you | have | kept down |
| he/she/it | has | kept down |
| we | have | kept down |
| you | have | kept down |
| they | have | kept down |
| I | had | kept down |
|---|---|---|
| you | had | kept down |
| he/she/it | had | kept down |
| we | had | kept down |
| you | had | kept down |
| they | had | kept down |