Be going to for plans, intentions and predictions
Plan or prediction? I (wear) my dress tonight.
PLAN. I am going to wear my dress tonight.
Plan or prediction? I (buy) groceries in the supermarket after work.
PLAN. I am going to buy groceries in the supermarket after work.
Plan or prediction? I (watch) the match on TV.
PLAN. I'm going to watch the match on TV.