此句的时间状语是 tomorrow morning(= 明天上午) ,属一般将来时; 一般将来时可以有不同的表达方式,如 be going to do / will do / be doing 等等; 原题又要求是问句,所以可以说 Is he going to play basketball tomorrow morning = Will he play basketball tomorrow morning = Is he playing basketball tomorrow morning = 他明天上午将打篮球吗?