I. buy <bought> [baı] 动词 trans
| I | buy | 
|---|---|
| you | buy | 
| he/she/it | buys | 
| we | buy | 
| you | buy | 
| they | buy | 
| I | bought | 
|---|---|
| you | bought | 
| he/she/it | bought | 
| we | bought | 
| you | bought | 
| they | bought | 
| I | have | bought | 
|---|---|---|
| you | have | bought | 
| he/she/it | has | bought | 
| we | have | bought | 
| you | have | bought | 
| they | have | bought | 
| I | had | bought | 
|---|---|---|
| you | had | bought | 
| he/she/it | had | bought | 
| we | had | bought | 
| you | had | bought | 
| they | had | bought | 
