for things that are likely to happen
be going to
i'm bungy jumping next weekend
present continuous
we're going to sail if its sunny (what is this tense?)
be going to
for definite plans
present continuous
For things we intend to do
be going to
i'm playing football next year (what is the tense?)
present continuous
for definite plans we already now abaut
present continuous
for things that are likely to happen
be going to