Feature Suggestion -- Translation Annotated for Number
I think learners would benefit, when translating from a language the distinguishes number in the second person, to a language that doesn't (particularly English), if there were a way that the learner could indicate her understanding of what number is being implied by the original text. For example, in French to English translation, if the prompt text says "Tu manges quelque chose.", the learner should be able to respond 'You (sing.) are eating something.'. This applies to German and Dutch as well.