Hot answers tagged yes-no-questions
First answer is yes, and next answer is no: 李先生在吗？ 在/不在 他是你的朋友吗？ 是/不是 李先生很累吗？ 累(This is shortest, but in real life people wouldn't answer like that)/不累(This is native.) 你要这张卡片吗？ 要/不要 李先生有朋友吗？ 有/没有 And using the 嗯 to make no answer is not the right way, people don't speak like that.
Don't know how much I can discover...and I'm not writing that strict rules. One can combine Ma with a negative sentence, and its answer is always reverse to the western logic. e.g. -你们还没吃饭吗？ -不，吃了。/对，没吃。 Thus there are direct answers as simplified compound answers based on main verb. 是的／对／对的－不是／不对、 是的－（还）没有 、 有的－没有。 Note that 你吃了吗? is ...
Answering everything with: 嗯 is perfectly acceptable and can avoid having to have any sort of conversation!
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