Grammar
N4 verb-grammar

As it is 〜まま

Meaning

A state left unchanged — "as it is", "still ~", "without changing".

Formation

Notes

With a verb it is almost always the た-form, because the state was created and then left: 電気をつけたまま寝た ("slept with the light left on"). Do not use the plain non-past — ×つけるまま is wrong.

Examples

I fell asleep with the light still on.

Breakdown
light (object) turned on (た-form) left as it was ended up sleeping

Please do not come in with your shoes on.

Breakdown
shoes (object) put on still don't enter

I went out leaving the window open.

Breakdown
window (object) opened left as it was went out

This town is just as it used to be. (noun + の + まま)

Breakdown
this town (topic) the past as it was

He went home without saying anything. (ない-form + まま)

Breakdown
anything not say without went home (regrettably)

⚠️ Often confused with

Left as it is 〜っぱなし

"Left ~ing", "~ and left that way" — something was done and never undone.