2. be going to 表示根据主观判断将来肯定发生的事情, will表示客观上将来势必发生的事情。 He is seriously ill. He is going to die. He will be twenty years old. 3. be going to 含有“计划,准备”的意思,而 will 则 没有这个意思,如: She is going to show me her book. He will be here later.