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. frown [fraʊn] 动词 不及物动词
| I | frown |
|---|---|
| you | frown |
| he/she/it | frowns |
| we | frown |
| you | frown |
| they | frown |
| I | frowned |
|---|---|
| you | frowned |
| he/she/it | frowned |
| we | frowned |
| you | frowned |
| they | frowned |
| I | have | frowned |
|---|---|---|
| you | have | frowned |
| he/she/it | has | frowned |
| we | have | frowned |
| you | have | frowned |
| they | have | frowned |
| I | had | frowned |
|---|---|---|
| you | had | frowned |
| he/she/it | had | frowned |
| we | had | frowned |
| you | had | frowned |
| they | had | frowned |