Present Perfect Continuous signal words
   
Spelling rules in building Present Perfect Continuous Tense. 
  
    | Verbs ending with -e | make | I have been making | 
  
    | write | I have been writing | 
  
    | drive | I have been driving | 
  
  
    | Verbs ending with -ee | agree | I have been agreeing | 
  
    | see | I have been seeing | 
  
    | Verbs ending with a consonant preceded by a vowel, double their consonant
 | hit | I have been hitting | 
  
    | let | I have been letting | 
  
    | put | I have been putting | 
  
    | run | I have been running | 
  
    | sit | I have been sitting | 
  
    | Two-syllable verbs: the last consonant is doubled when the last syllable is stressed
 | forget | forgetting | 
  
    | prefer | preferring | 
  
    | upset | upsetting | 
  
    | Verbs ending with -ie | lie | lying | 
  
    | tie | tying | 
  
    | Verbs ending with -c | picnic | picnicking | 
  
    | Verbs ending with -y | carry | carrying | 
  
    | enjoy | enjoying | 
  
    | hurry | hurrying | 
  
    | EXCEPTIONS! | age | ageing | 
  
    | dye | dyeing | 
  
    | singe | singeing | 
  
    | budget | budgeting | 
  
    | enter | entering |