I. know <knew, known> [nəʊ] 动词 trans
| I | know | 
|---|---|
| you | know | 
| he/she/it | knows | 
| we | know | 
| you | know | 
| they | know | 
| I | knew | 
|---|---|
| you | knew | 
| he/she/it | knew | 
| we | knew | 
| you | knew | 
| they | knew | 
| I | have | known | 
|---|---|---|
| you | have | known | 
| he/she/it | has | known | 
| we | have | known | 
| you | have | known | 
| they | have | known | 
| I | had | known | 
|---|---|---|
| you | had | known | 
| he/she/it | had | known | 
| we | had | known | 
| you | had | known | 
| they | had | known | 
