http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
 
  
 I. lengthen [美 ˈlɛŋ(k)θən, 英 ˈlɛŋ(k)θ(ə)n, ˈlɛn(t)θən] 动词 trans
II. lengthen [美 ˈlɛŋ(k)θən, 英 ˈlɛŋ(k)θ(ə)n, ˈlɛn(t)θən] 动词 不及物动词
lengthen day/shadow:
在《PONS词典》中的词汇
 
  
 I. lengthen [ˈleŋθən] 动词 trans
II. lengthen [ˈleŋθən] 动词 不及物动词
1. lengthen (in time):
 
  
 I. lengthen [ˈleŋk·θən] 动词 trans
II. lengthen [ˈleŋk·θən] 动词 不及物动词
1. lengthen (in time):
| 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 | 
 
  
 