I. step [step] 名词
II. step <stepped; stepping> [step] 动词 不及物动词
| I | step |
|---|---|
| you | step |
| he/she/it | steps |
| we | step |
| you | step |
| they | step |
| I | stepped |
|---|---|
| you | stepped |
| he/she/it | stepped |
| we | stepped |
| you | stepped |
| they | stepped |
| I | have | stepped |
|---|---|---|
| you | have | stepped |
| he/she/it | has | stepped |
| we | have | stepped |
| you | have | stepped |
| they | have | stepped |
| I | had | stepped |
|---|---|---|
| you | had | stepped |
| he/she/it | had | stepped |
| we | had | stepped |
| you | had | stepped |
| they | had | stepped |