Present Perfect

Present Perfect

1. Present Perfect Continuous

   • Usage
     • Is used to tal about actions that have started in the past, but continue in the present
   • Example
     • Alex has been waiting for you all days
   • Form
     • Affirmative: subject + to have + been + verb + ing
     • Negative: Subject + to have + not + been + verb + ing
     • Interrogative: To have + subject + been + verb + ing
   • Structure
     • Subject + verb auxiliar to have + verb + ing
   • Differences between Present Perfect and Present perfect continuous
     • Present perfect continuous is used to talk about a continuous action or situation, but not necessarily finished and the present perfect is used to talk about a finished action

2. Example

   • We have lived in this house for over twenty years

3. Form

   • Have + I + verb + past participle form + object optional
   • I + have + verb + past participle form + object optional
   • I + have not + verb past participle + object optional

4. Usage

   • When we want to talk about unfinished actions or habits that started in the past and continue in the present.

5. Structure

   • The appropiate form of auxiliary verb to have, plus the past participle of the main verb