Why don't you 〜

（勧誘）

Why don't you come and play baseball with us.  play chess/play monopoly


（類似表現）
Do you want to go and get some pizza?
We could go see a movie.
You can come watch the game here.


※注意点

①Why don't you go see a movie?

②Why don't we go see a movie?

③Why don't you come see a movie?

映画に誘っている表現だが①は貴方が1人で映画に行ったら？という意味になり、
一般会話ではrudeになるのでWhy don't you goの表現は避けたほうが無難だ。