I. book [bʊk] 名词
| I | book | 
|---|---|
| you | book | 
| he/she/it | books | 
| we | book | 
| you | book | 
| they | book | 
| I | booked | 
|---|---|
| you | booked | 
| he/she/it | booked | 
| we | booked | 
| you | booked | 
| they | booked | 
| I | have | booked | 
|---|---|---|
| you | have | booked | 
| he/she/it | has | booked | 
| we | have | booked | 
| you | have | booked | 
| they | have | booked | 
| I | had | booked | 
|---|---|---|
| you | had | booked | 
| he/she/it | had | booked | 
| we | had | booked | 
| you | had | booked | 
| they | had | booked | 
