
Verbo regular: concern - concerned - concerned
Presente | Presente continuo | Pretérito | Pretérito continuo | 
|  do I concern? do you concern? does he concern? do we concern? do you concern? do they concern?  |  am I concerning? are you concerning? is he concerning? are we concerning? are you concerning? are they concerning?  | did I concern? did you concern? did he concern? did we concern? did you concern? did they concern?  |  was I concerning? were you concerning? was he concerning? were we concerning? were you concerning? were they concerning?  | 
Presente perfecto | Presente perfecto continuo | Pluscuamperfecto | Pluscuamperfecto continuo | 
|  have I concerned? have you concerned? has he concerned? have we concerned? have you concerned? have they concerned?  |  have I been concerning? have you been concerning? has he been concerning? have we been concerning? have you been concerning? have they been concerning?  | had I concerned? had you concerned? had he concerned? had we concerned? had you concerned? had they concerned?  | had I been concerning? had you been concerning? had he been concerning? had we been concerning? had you been concerning? had they been concerning?  | 
Futuro simple | Futuro continuo | Futuro perfecto | Futuro perfecto contínuo | 
|  will I concern? will you concern? will he concern? will we concern? will you concern? will they concern?  |  will I be concerning? will you be concerning? will he be concerning? will we be concerning? will you be concerning? will they be concerning?  |  will I have concerned? will you have concerned? will he have concerned? will we have concerned? will you have concerned? will they have concerned?  |  will I have been concerning? will you have been concerning? will he have been concerning? will we have been concerning? will you have been concerning? will they have been concerning?  | 
Presente | Presente continuo | Passado | Passado continuo | 
|  would I concern? would you concern? would he concern? would we concern? would you concern? would they concern?  |  would I be concerning? would you be concerning? would he be concerning? would we be concerning? would you be concerning? would they be concerning?  |  would I have concerned? would you have concerned? would he have concerned? would we have concerned? would you have concerned? would they have concerned?  |  would I have been concerning? would you have been concerning? would he have been concerning? would we have been concerning? would you have been concerning? would they have been concerning?  | 
Infinitivo | Imperativo | 
Infinitivo | Imperativo | ||
| to concern | - - -  | 
Presente | Passado | ||
| concerning | concerned |