I. length·en [ˈleŋ(k)θən] 动词 trans
| I | lengthen |
|---|---|
| you | lengthen |
| he/she/it | lengthens |
| we | lengthen |
| you | lengthen |
| they | lengthen |
| I | lengthened |
|---|---|
| you | lengthened |
| he/she/it | lengthened |
| we | lengthened |
| you | lengthened |
| they | lengthened |
| I | have | lengthened |
|---|---|---|
| you | have | lengthened |
| he/she/it | has | lengthened |
| we | have | lengthened |
| you | have | lengthened |
| they | have | lengthened |
| I | had | lengthened |
|---|---|---|
| you | had | lengthened |
| he/she/it | had | lengthened |
| we | had | lengthened |
| you | had | lengthened |
| they | had | lengthened |