Grammar fix
join in
participate
to take part in an activity or conversation with others who are already doing it
phrasal verbB1common
Hear it in context
Notice where the phrase sounds natural.
Everyone was dancing, so I decided to join in.
In my opinion, it's important to join in group discussions at university because it helps you learn from others.
Fix the pattern
One small grammar move makes it sound right.
Not: Why don't you join in to the game?
Say: Why don't you join in the game? / Why don't you join in?
'Join IN' (no 'to'); optionally 'join in WITH us'.
Which sounds natural?
Tap the one a native speaker would say.
'Join in' is the warm, natural invitation. 'Participate in the activity' is formal.
Build natural chunks
Words that usually travel with it.
join in
- the fun
- the singing
- with us
- the conversation