http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
在《PONS词典》中的词汇
 
  
 | I | sign off | 
|---|---|
| you | sign off | 
| he/she/it | signs off | 
| we | sign off | 
| you | sign off | 
| they | sign off | 
| I | signed off | 
|---|---|
| you | signed off | 
| he/she/it | signed off | 
| we | signed off | 
| you | signed off | 
| they | signed off | 
| I | have | signed off | 
|---|---|---|
| you | have | signed off | 
| he/she/it | has | signed off | 
| we | have | signed off | 
| you | have | signed off | 
| they | have | signed off | 
| I | had | signed off | 
|---|---|---|
| you | had | signed off | 
| he/she/it | had | signed off | 
| we | had | signed off | 
| you | had | signed off | 
| they | had | signed off | 
 
  
 