('Who was Tom with when you saw him?')请问此句怎么理解呢?

('Who was Tom with when you saw him?')请问此句怎么理解呢? Tom with his friends was playing basketball when I saw him. When I first saw Jerry,he was playing with Tom.改为同义句 Mike is still( )with his work as he was when I saw him last. Who was with you? Tom was reading a novel when Isaw him改为同义句 ____ Tom __ ___a 1.what____he______(say)when you saw him? who I am when I am with you 这句怎么翻译? Tom's mother said that he was out when I visited him同义句 he was play tennis when I saw him 改错 What was Davy doing when Linda _____（final) saw him? when I saw him,he__(play) with other boys.