I. fail [feıl] 动词 不及物动词
II. fail [feıl] 动词 trans
| I | fail | 
|---|---|
| you | fail | 
| he/she/it | fails | 
| we | fail | 
| you | fail | 
| they | fail | 
| I | failed | 
|---|---|
| you | failed | 
| he/she/it | failed | 
| we | failed | 
| you | failed | 
| they | failed | 
| I | have | failed | 
|---|---|---|
| you | have | failed | 
| he/she/it | has | failed | 
| we | have | failed | 
| you | have | failed | 
| they | have | failed | 
| I | had | failed | 
|---|---|---|
| you | had | failed | 
| he/she/it | had | failed | 
| we | had | failed | 
| you | had | failed | 
| they | had | failed | 
