在《PONS词典》中的词汇
| I | check up | |
|---|---|---|
| you | check up | |
| he/she/it | checks up | |
| we | check up | |
| you | check up | |
| they | check up |
| I | checked up | |
|---|---|---|
| you | checked up | |
| he/she/it | checked up | |
| we | checked up | |
| you | checked up | |
| they | checked up |
| I | have | checked up | |
|---|---|---|---|
| you | have | checked up | |
| he/she/it | has | checked up | |
| we | have | checked up | |
| you | have | checked up | |
| they | have | checked up |
| I | had | checked up | |
|---|---|---|---|
| you | had | checked up | |
| he/she/it | had | checked up | |
| we | had | checked up | |
| you | had | checked up | |
| they | had | checked up |