Present perfect and past simple

PRESENT PERFECT
Время действия не указано или используются слова: только что (just), уже (already), ещё нет (not yet).
He has just fed his pet.
She has already gone to the Zoo.
We have not written a composition yet.
PAST SIMPLE
Указано время действия в прошлом: тому назад (ago), в прошлом году (last year), вчера (yesterday).
We fed our pet two hours ago.
He went to the Zoo last week.
They watched TV yesterday.

PRESENT PERFECT
Есть связь с текущим моментом
I have cleaned three cages, so I am tired
Может быть указано, сколько раз выполнялось действие
I have been to the Zoo three times
PAST SIMPLE
Нет связи с текущим моментом
I cleaned my hamster’s cage yesterday.

PRESENT PERFECT
+ He has gone to lunch.
He has not gone to lunch.
? Has he gone to lunch?
PAST SIMPLE
+ He went to lunch an hour ago.
He did not go to lunch an hour ago.
? Did he go to lunch an hour ago?