 
  
 I. frown [fraʊn] 动词 不及物动词
1. frown (showing displeasure):
2. frown (in thought):
 
  
 | 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 | 
