| I | gnaw |
|---|---|
| you | gnaw |
| he/she/it | gnaws |
| we | gnaw |
| you | gnaw |
| they | gnaw |
| I | gnawed |
|---|---|
| you | gnawed |
| he/she/it | gnawed |
| we | gnawed |
| you | gnawed |
| they | gnawed |
| I | have | gnawn |
|---|---|---|
| you | have | gnawn |
| he/she/it | has | gnawn |
| we | have | gnawn |
| you | have | gnawn |
| they | have | gnawn |
| I | had | gnawn |
|---|---|---|
| you | had | gnawn |
| he/she/it | had | gnawn |
| we | had | gnawn |
| you | had | gnawn |
| they | had | gnawn |
单语范例（未经PONS编辑处理）
In legend the breach was caused by large rats gnawing at it with their teeth and scratching it with their nails.
en.wikipedia.org The teeth have enamel on the outside and exposed dentin on the inside, so they self-sharpen during gnawing.
en.wikipedia.org Their incisor teeth somewhat resemble those of the placental rodents (rats, mice, etc.), being adapted for gnawing tough vegetation.
en.wikipedia.org She is then mysteriously revived by a group of alley cats that flock around her and begin gnawing at her fingers.
en.wikipedia.org It was particularly useful for binding sheaves of grain because mice do not gnaw on it.
en.wikipedia.org