Mandarin: different ways of asking if someone prefers A to B This question is similar but doesn't address this question of comparing different ways to express the notion of preferring A to B.

Are all these ways valid grammar for asking if someone prefers A to B? (In this case A is Chinese food while B is American food.)

Expression #2 seems like it might be wrong.


妳喜歡中國菜多過美國才嗎?
中國菜比美國菜妳喜歡多嗎？
妳覺得中國菜比美國菜好吃嗎?
Sentence 3 is correct in grammar. 


  妳覺得中國菜比美國菜好吃嗎?


I would probably put: 


  
  中国菜和美国菜，你更喜欢哪一种？
  你喜欢吃中国菜还是美国菜？ 
  中国菜和美国菜，你觉得哪个更好吃？