Present Perfect
by Oscar Torres Bernat
1. Uses: We use the present perfect to talk about an unspecific time in the past.
2. Examples
2.1. Afirmative: I have had a busy year at work
2.2. Negative: I haven't seen you at school
2.3. Questions: Have you ever been in US?
3. Structures
3.1. Afirmative: Subj+ Have+ Verb Participle+ Comp.
3.2. Negative: Subj+ Have not/haven't+ Verb participle+ Comp.
3.3. Questions: Have+ Subj+ Verb participle+ Comp
4. Note: have been to= have visited a place
