Answer:
'Be going to' has TWO meanings, both of which express future actions.
'Be going to' can be used to make predictions.
Ex. According to the weather report, it is going to be cloudy tomorrow.
'Be going to' is also used to express a prior plan (i.e., a plan made before the moment of speaking.)
Ex. I am going to attend my brother's graduation on Saturday.
Step-by-step explanation: