What is the best way to tell if a sentence in Portuguese is question from listening? I'm having a hard time making the distinction when I hear the sound samples. For instance, is there a raise in tone at the end of the sentence like in English? Or is there a kind of pattern in sentence structure?
A clarification: In English, the voice rises in tone when the answer to the question is "yes or no." With information questions (where, why, when, what, who, whom, and how) the voice falls. An exception: when the answer surprises you - example: The person says he is vacationing in Baghdad - your response: where did you say you are vacationing?! with the voice rising - in surprise.
You can use do/does with other verbs, but not with forms of "to be" and not with all forms of "to have" which are also used to make other verb conjugations in English.
You could say "Does the steak taste good?" I do not know if it would have been accepted by DuoLingo for this sentence, but it means the same thing. "Is the steak tasting good?" is another question which is asking about this very moment while you are eating it.
Another question "Has the steak tasted good?" would be rare but would be asked right after someone just finished eating the steak. We are more likely to ask "Did the steak taste good?" which is the past form of the question.