| INDICATIVE |  | 
|  Present |  | 
I occur   You occur   He/She/It occurs   We occur   You occur   They occur  
  |  Io _  Tu _ Egli/Ella/Esso accade Noi _ Voi _ Essi/Esse/Loro accadono
  | 
|  Imperfect |  | 
I was occuring   You were occuring   He/She/It was occuring   We were occuring   You were occuring   They were occuring  
  |  Io _ Tu _ Egli/Ella/Esso accadeva Noi _ Voi _ Essi/Esse/Loro accadevano
  | 
|  Perfect |  | 
I occured   You occured   He/She/It occured   We occured   You occured   They occured  
  |  Io _ Tu _ Egli/Ella/Esso accadde Noi _ Voi _ Essi/Esse/Loro accaddero
  | 
|  Perfect |  | 
I have occured   You have occured   He/She/It has occured   We have occured   You have occured   They have occured  
  |  Io sono accaduto Tu sei accaduto Egli/Ella/Esso è accaduto Noi siamo accaduti Voi siete accaduti Essi/Esse/Loro sono accaduti
  | 
|  PlusPerfect |  | 
I had occured   You had occured   He/She/It had occured   We had occured   You had occured   They had occured  
  |  Io ero accaduto Tu eri accaduto Egli/Ella/Esso era accaduto Noi eravamo accaduti Voi eravate accaduti Essi/Esse/Loro erano accaduti
  | 
|  Plusperfect |  | 
I had occured   You had occured   He/She/It had occured   We had occured   You had occured   They had occured  
  |  Io fui accaduto Tu fosti accaduto Egli/Ella/Esso fu accaduto Noi fummo accaduti Voi foste accaduti Essi/Esse/Loro furono accaduti
  | 
|  Future |  | 
I will occur   You will occur   He/She/It will occur   We will occur   You will occur   They will occur  
  |  Io _ Tu _ Egli/Ella/Esso accadrà Noi _ Voi _ Essi/Esse/Loro accadranno
  | 
|  Future perfect |  | 
I will have occured   You will have occured   He/She/It will have occured   We will have occured   You will have occured   They will have occured  
  |  Io sarò accaduto Tu sarai accaduto Egli/Ella/Esso sarà accaduto Noi saremo accaduti Voi sarete accaduti Essi/Esse/Loro saranno accaduti
  | 
| SUBJUNTIVE |  | 
|  Present |  | 
I (that )may occur   You (that )may occur   He/She/It (that )may occur   We (that )may occur   You (that )may occur   They (that )may occur  
  |  Io _ Tu _ Egli/Ella/Esso accada Noi _ Voi _ Essi/Esse/Loro accadano
  | 
|  Imperfect |  | 
I (that )might occur   You (that )might occur   He/She/It (that )might occur   We (that )might occur   You (that )might occur   They (that )might occur  
  |  Io _ Tu _ Egli/Ella/Esso accadesse Noi _ Voi _ Essi/Esse/Loro accadessero
  | 
|  Perfect |  | 
I (whether) occured   You (whether) occured   He/She/It (whether) occured   We (whether) occured   You (whether) occured   They (whether) occured  
  |  Io sia accaduto Tu sia accaduto Egli/Ella/Esso sia accaduto Noi siamo accaduti Voi siate accaduti Essi/Esse/Loro siano accaduti
  | 
|  Pluperfect |  | 
I (whether) had occured   You (whether) had occured   He/She/It (whether) had occured   We (whether) had occured   You (whether) had occured   They (whether) had occured  
  |  Io fossi accaduto Tu fossi accaduto Egli/Ella/Esso fosse accaduto Noi fossimo accaduti Voi foste accaduti Essi/Esse/Loro fossero accaduti
  | 
| CONDITIONAL |  | 
|  Present |  | 
I would occur   You would occur   He/She/It would occur   We would occur   You would occur   They would occur  
  |  Io _ Tu _ Egli/Ella/Esso accadrebbe Noi _ Voi _ Essi/Esse/Loro accadrebbero
  | 
|  Perfect |  | 
I would have occured   You would have occured   He/She/It would have occured   We would have occured   You would have occured   They would have occured  
  |  Io sarei accaduto Tu saresti accaduto Egli/Ella/Esso sarebbe accaduto Noi saremmo accaduti Voi sareste accaduti Essi/Esse/Loro sarebbero accaduti
  | 
| IMPERATIVE |  | 
|  Present |  | 
let me occur   occur   let him occur   let us occur   occur   let them occur  
  |  Io - Tu _  Egli/Ella/Esso accada Noi _ Voi _ Essi/Esse/Loro accadano
  | 
| PARTICIPLE |  | 
|  Present |  | 
occuring  
  |  _
  | 
|  Perfect |  | 
occured  
  |  accaduto accaduti...
  | 
| INFINITIVE |  | 
|  Present |  | 
to occur  
  |  accadere
  | 
|  Perfect |  | 
have occured  
  |  essere accaduto
  | 
| GERUND |  | 
|  Present |  | 
occuring  
  |  accadendo
  | 
|  Perfect |  | 
having occured  
  |  essendo accaduto
  |