I. study [ˈstʌdı] 名词
| I | study | 
|---|---|
| you | study | 
| he/she/it | studies | 
| we | study | 
| you | study | 
| they | study | 
| I | studied | 
|---|---|
| you | studied | 
| he/she/it | studied | 
| we | studied | 
| you | studied | 
| they | studied | 
| I | have | studied | 
|---|---|---|
| you | have | studied | 
| he/she/it | has | studied | 
| we | have | studied | 
| you | have | studied | 
| they | have | studied | 
| I | had | studied | 
|---|---|---|
| you | had | studied | 
| he/she/it | had | studied | 
| we | had | studied | 
| you | had | studied | 
| they | had | studied | 
