A We use the present perfect to talk about present / past experiences.
b We say / don't say exactly when
something happened.
c We use the correct form of have / be and
the past participle of the verb.
d With regular verbs, the past participle
is the same as / different from the past
simple form.
Р6р6ининмгтнмнтшигишини
Объяснение: