be going to与 will两者都可表示将要发生的事、将要去做某事,但它们有如下几点区别:
1. be going to表示近期、眼下就要发生的事情, will表示的将来时间则较远一些,如:
He is going to write a letter tonight.
He will write a book one day.
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 lend us her book.
He will be here in half an hour.
4.在有条件从句的主句中,一般不用 be going to,而多用 will,如:
If any beasts come at you, I'll stay with you and help you