对go to bed 能否用进行时代替将来时.如,I'm going to bed.还是用I'm going to go

I'm gong to bed是对的!
be going to是将来时的固定句型,表示计划极强的动作,
go to bed中的go是个趋向动词,它可以由进行时代替.
I'm going to bed.比I'm going to go to bed.简洁,前者更合适!