| I | fence |
|---|---|
| you | fence |
| he/she/it | fences |
| we | fence |
| you | fence |
| they | fence |
| I | fenced |
|---|---|
| you | fenced |
| he/she/it | fenced |
| we | fenced |
| you | fenced |
| they | fenced |
| I | have | fenced |
|---|---|---|
| you | have | fenced |
| he/she/it | has | fenced |
| we | have | fenced |
| you | have | fenced |
| they | have | fenced |
| I | had | fenced |
|---|---|---|
| you | had | fenced |
| he/she/it | had | fenced |
| we | had | fenced |
| you | had | fenced |
| they | had | fenced |
单语范例（未经PONS编辑处理）
In total, 28 swamp and tall-herb fen communities have been identified.
en.wikipedia.org It is found in the prairie fen habitat.
en.wikipedia.org The upstream part of the system supports freshwater marsh, fen, rush pasture and reedmarsh habitats, along with wooded valleys in places.
en.wikipedia.org The habitat consists of gardens, scrub and fens.
en.wikipedia.org Fen was taken in by his grandfather after the death of his parents and the two made a living by fishing.
en.wikipedia.org