to ask sb’s opinion ☊ 
tra cứu tham khảo thăm dò hỏi ý kiến 
consult like: hỏi ý kiến → →
sich beratschlagen ☊ 
bàn bạc, hỏi ý kiến ☊ 
商议 ☊ shāngyì sich beratschlagen ☊ bàn bạc, hỏi ý kiến ☊ ☊ I'd like to ask his opinion but I find him difficult to approach (= not easy to talk to in a friendly way). ☊ approach ☊
consult sb: If the pain continues, consult your doctor. ☊ consult ☊
I asked her opinion, but she just asked me a question in return. ☊ in return (for sth) ☊