It's me and the present perfect again!
Could we say:
-Today, I've found what I was looking for. Yes, we could.
-You haven't said a word since we arrived. (is "arrived" correct?) Yes.
-They met 10 years ago and they've all become friends.
(Here, I'd rather use the Past simple: and "they all became friends", but they are still friends today, that's why I'm now wondering if the PP would be better in this case!!!)
If you use the present perfect, it suggests that they became friends at some time during the last ten years. If you say "...they all became friends" it suggests that they became friends immediately.
-If someone hits someone else (and if that someone else falls down) what can I say: "What have you done to her" or "What did you do to her?" You could say either.
-I've studied everything and I've failed everything. OK
-He's had some problems with alcohol. (He doesn't anymore). "He had..."
-I haven't always given my parents satisfaction versus I didn't always give my parents satisfaction. With the PP you are saying that up to this point in time you haven't satisfied your parents. If you use the simple past you are saying that at some time in the past you failed to satisfy them, with the implication that now you do satisfy them.
Thank you very much, your help is very valuable.
Student or Learner