YOU SAID:
The door has become locked.
INTO JAPANESE
ドアがロックになります。
BACK INTO ENGLISH
The door will lock.
INTO JAPANESE
ドアがロックされます。
BACK INTO ENGLISH
The door is locked.
INTO JAPANESE
ドアがロックされています。
BACK INTO ENGLISH
The door is locked.
You've done this before, haven't you.