Grammar fix
plug in
connect to power
To plug something in is to connect it to the electricity or to a socket.
phrasal verbB1core
Hear it in context
Notice where the phrase sounds natural.
- Just plug it in over there by the kettle — there's a free socket.technology
- It won't turn on because you haven't plugged it in.technology
Fix the pattern
Pattern: plug it in / plug in the charger
Patternplug it in / plug in the charger