dans le dictionnaire PONS
I. fall behind VERBE intr
II. fall behind VERBE trans
| 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 |