Why did Duolingo correct 'doesn't ' to 'cannot' when 'cannot' isn't in the drop down menu options for 'не'? (I'm using the app).
There's no reference in the sentence to the brother's ability to speak, simply the observation that he doesn't. He may not speak for a variety of reasons - some physical or mental disorder preventing him from speaking, or an active decision not to speak, or a fear that speaking will cause some negative result. "Cannot" explains why the brother doesn't speak, but that's not part of the Russian sentence.
Does anyone know the difference between скажите and говорит ? Why did we use говорит though? Thx
Those are different forms of different verbs. Скажите is 2nd person plural imperative, and is from a perfective verb (so it can only mean a single one-time action).
Would My younger brother does not say it at all be a correct answer? How would u say it be in russian if it was wrong?
The exercise sentence doesn't have a direct object "it" in it, so I don't think your sentence would be correct.
A Russian version of your sentence might be: Мой младший брат совсем этого не говорит. (Этого is genitive as the direct object of a negated verb. It's possible that the sentence is Мой младший брат это совсем не говорит. Or something else.)
Is there a reason "can't speak at all" isn't accepted? Does this sentence only translate to someone who chooses not to speak?
The reason for not speaking isn't present in the exercise, so it could be inability or unwillingness: can't or won't. "Doesn't" only observes that the brother isn't not speaking, without giving a reason for it.
please try to solve the problem with exercise three around level 0 i cannot to continue with the lessons because the excersice page it is blocked since yesterday and i am eager to go on!!