YOU SAID:

Hi guys are you going to the beach

INTO JAPANESE

こんにちは、あなたたちはビーチに行くつもりですか

BACK INTO ENGLISH

Hello, are you guys going to the beach?

INTO JAPANESE

こんにちは、ビーチに行きますか？

BACK INTO ENGLISH

Hi, would you like to go to the beach?

INTO JAPANESE

こんにちは、ビーチに行きませんか？

BACK INTO ENGLISH

Hi, would you like to go to the beach?