Vocabulary

鍵をかける

to lock (a door, etc.); to lock up

expression verb

Example sentences

He tried in vain to open the locked door.

He left the door unlocked.

I locked the door, in case someone tried to get in.

Lock the window before going to bed.

Never fail to lock the door when you go to bed.

Please lock the door before you go out.

Please lock the door when you leave.

Please lock the door when you leave.