在《PONS词典》中的词汇
fall behind 动词 不及物动词
1. fall behind (slow):
2. fall behind:
3. fall behind (achieve late):
| I | fall behind |
|---|---|
| you | fall behind |
| he/she/it | falls behind |
| we | fall behind |
| you | fall behind |
| they | fall behind |
| I | fell behind |
|---|---|
| you | fell behind |
| he/she/it | fell behind |
| we | fell behind |
| you | fell behind |
| they | fell behind |
| I | have | fallen behind |
|---|---|---|
| you | have | fallen behind |
| he/she/it | has | fallen behind |
| we | have | fallen behind |
| you | have | fallen behind |
| they | have | fallen behind |
| I | had | fallen behind |
|---|---|---|
| you | had | fallen behind |
| he/she/it | had | fallen behind |
| we | had | fallen behind |
| you | had | fallen behind |
| they | had | fallen behind |