This could be a duplicate but I haven't found one.
My German-Japanese dictionary lists both Was denken Sie? and Wie denken Sie? as expressions to ask for an opinion. Combined with searches on the web, I think both are actually acceptable forms. But I noticed Langenscheidt has only Was denken Sie?.
My questions are:
- Are both acceptable as an equivalent to English What do you think?
- Is there any difference in meaning or occasion where they are used?
- (If Wie.. is accpetable) In my understanding, How do you think? in English is considered wrong. If Wie denken Sie? is grammatically wrong in the same way, why is it acceptable?