I. gain [geın] 动词 trans
| I | gain | 
|---|---|
| you | gain | 
| he/she/it | gains | 
| we | gain | 
| you | gain | 
| they | gain | 
| I | gained | 
|---|---|
| you | gained | 
| he/she/it | gained | 
| we | gained | 
| you | gained | 
| they | gained | 
| I | have | gained | 
|---|---|---|
| you | have | gained | 
| he/she/it | has | gained | 
| we | have | gained | 
| you | have | gained | 
| they | have | gained | 
| I | had | gained | 
|---|---|---|
| you | had | gained | 
| he/she/it | had | gained | 
| we | had | gained | 
| you | had | gained | 
| they | had | gained | 
