switch off

Separable

Stop a machine or light by pressing a switch

Please switch off your phones.

Separable

The object can go between the verb and the particle: turn the light off, or turn off the light. When the object is a pronoun it must go in the middle: turn it off, never turn off it.

The particle: off

This verb belongs to the group ‘switching and shutting off’.

Others in the group: turn off, shut off.

Practise it

Add it to your daily practice or see every verb with off.

Further reading: switch off on Wiktionary (CC BY-SA).