be going to do sth相当于什么?(除will外)

问题描述:

be going to do sth相当于什么?(除will外)
是不是plan to do sth
plan to do sth 前面是否加be 也就是变成be planning to do sth?

be to ,可以替代be going to ,如:I am going to see my grandma.也可以说成.I am to see my grandma.plan 是动词,因此前面不要加BE,如:我打算明天去看一下医生:I plan to to see my doctor tomorrow....