As usual, the hints are rubbish!
I agree. I am having great difficulty understanding the rules of this language, which seem to be either really complicated or nonexistant. I need to take a class at my local college.
why isn't there an "a" or "da" before "rispondere" here? How can I know whether an infinitive uses "a" or "da" or nothing at all?
That isn't decided by "rispondere" but by "potere" which precedes it and doesn't require a preposition. Here's a list: http://italian.about.com/od/verbs/a/aa031908a.htm
Thanks for the link. Very helpful.
"I could not" and "I have not been able to" are two distinctly different things. There is a better translation that this, I'm quite certain.
Non ho saputo was accepted for me, 15 June 2020.
Yes. Rispondere is an intransitive verb. Rispondere a is the most common form. You can also have rispondere di, to be responsible for, rispondere di no, to answer no, or rispondere che, to answer that.
It's ALWAYS "rispondere A" ?
Non sono stato abile di rispondere alla tua domanda.
Why not "Non avevo potuto rispondere alla tua domanda"?
That would translate as "I HAD NOT been able...."
Your could apply to more than one person, or to one person with the familiar or formal mode.
"non sono stato abile" is acceptable?
"Non era capace"?
Perché non: Non sono riuscire a rispondere alla tua domanda.
why is "non potevo ..." not accepted?
Drop down gave different answers
Non ho potuto means I couln't, right?
"Non sono stato capace a rispondere alla tua domanda" was rejected. What is wrong ?
I'm completely sad with italian((. One year of it study and i cannot undersand a lot. Especially with these di, da, del, dal, al, per.... or it ansence. Hungarian or russian is more logic than it(
Italian is indeed not the easiest language to learn, but muster up courage and go on exercising !