How to ask if others want to do something?


In the Japanese language, if the speaker wants to express the will he himself
wants to do, 'たい ' is usually used. For example:

> I want to buy this book.  
>  わたしはこの本を買いたい。
>
> I want to go back home.  
>  わたしは家に帰りたいです。

But how to say something like, "do you want to", or "does he want to" in
Japanese? Can I say, '君.....たがる’?、or ’彼.....たがる’? For instance:

> Do you want to go back to the company? '会社に戻りたがる？
>
> Do they want to play in the park? 彼らは公園で遊びたがりますか?

Am I right?




When asking a question, you still will want to use たい instead of たがる. The
reason for this is that がる really means that you are concluding based on
certain observations, and also makes the sentence sound impersonal. This is
why it is suitable for third person but not first person, because using it
with the latter would make it sound like you're guessing your own emotions and
desires.

When asking what the listener wants, there is no need to use the がる grammar
because you aren't making any conclusions based on observations, you're just
asking them what they want. Simply using たい is fine.

I believe when asking what a 3rd person wants, you should still use the がる
grammar because it still gives an impersonal/distant feel. I'm inclined to
say, though, that using でしょう instead is used a lot more in daily speech for
stating what a 3rd person wants than たがる.

