I. strain2 [streın] 动词 不及物动词
II. strain2 [streın] 动词 trans
| I | strain | 
|---|---|
| you | strain | 
| he/she/it | strains | 
| we | strain | 
| you | strain | 
| they | strain | 
| I | strained | 
|---|---|
| you | strained | 
| he/she/it | strained | 
| we | strained | 
| you | strained | 
| they | strained | 
| I | have | strained | 
|---|---|---|
| you | have | strained | 
| he/she/it | has | strained | 
| we | have | strained | 
| you | have | strained | 
| they | have | strained | 
| I | had | strained | 
|---|---|---|
| you | had | strained | 
| he/she/it | had | strained | 
| we | had | strained | 
| you | had | strained | 
| they | had | strained | 
