YOU SAID:
"What are you doing?" Tom had asked Tim. Tim responded to Tom with "I am playing with the ball. Would you like to join me?"
INTO JAPANESE
"何してるの?"トムはティムに尋ねた。ティムはトムに「私はボールで遊んでいます。参加しませんか?」と答えました。
BACK INTO ENGLISH
"What are you doing?" Tom asked Tim. Tim replied to Tom, "I'm playing with a ball. Would you like to join me?"
INTO JAPANESE
"何してるの?"トムはティムに尋ねた。ティムはトムに、「私はボールで遊んでいます。一緒に参加しませんか?」と答えました。
BACK INTO ENGLISH
"What are you doing?" Tom asked Tim. Tim replied to Tom, "I'm playing with a ball. Would you like to join me?"
That didn't even make that much sense in English.