Which one is correct for this sentence 欲しよう or 欲しがる


If I want to say " I think my grandma wants me to stay over tonight as well."

Are any of these ok? 祖母は 今日も 私に泊まって欲しよう。 祖母は 今日も 私に泊まって欲しがる。<-- but i'm not
sure how I should add "I think(と思う)" into this sentence




Your attempts are incorrect. 欲しよう is ungrammatical in any situation. Please
check the grammar rule of よう in your textbook.

Here are some correct ways to say this:

>   1. 祖母は今日も私に泊まって欲し **そ** うだ。
>   2. 祖母は今日も私に泊まって欲し **い** ようだ。
>   3. 祖母は今日も私に泊まって欲しがっている。
>   4. 祖母は今日も私に泊まって欲しいと思っている。
>

These are semantically similar, but Sentences 1 and 2 mean " _Looks like_
grandma wants me to..." whereas Sentence 3 and 4 directly describe her wish.

See:

  * [Difference between そうです、 ようです and らしいです.](https://japanese.stackexchange.com/q/16312/5010)
  * [When to use 欲しがる instead of 欲しい](https://japanese.stackexchange.com/q/2524/5010)

