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"I'm writing **with** a pen"

"I'm writing **with** a pencil"

"I'm drawing **with** a blue crayon"

and so on.

> ボールペン **で** かいています。

or

> ボールペン **を** かいています。

or what do I use?
CC BY-SA 3.0
2015-11-21T13:20:02.527
29371
2015-11-21T16:53:17.173
2015-11-21T16:53:17.173
11758
question
particles particle-で
Which particle do I use to express using a writing instrument?
ボールペンで書{か}いています is correct で = "by means of/with" in this context.

Your other sentence ボールペンをかいています would literally mean "I am writing a pen"
which doesn't make any sense.
CC BY-SA 3.0
2015-11-21T15:01:57.687
29375
2015-11-21T15:01:57.687
7944
29371
answer