に/で and を/から - particle choice in two JLPT N5 sentences


> この かみ **に** 電話番号を 書いてください。

Why is it wrong to use で instead? What if the sentence is like
このボールペン＿＿電話番号を書いてください?

> 六時に 会社 **を** 出て、うちへ 帰ります。

Why is it wrong to use から here? Is it because it's a fixed expression?




First question about で: かみに means " **on** the paper" ("write on the paper")
while かみで would mean " **with** the paper" in a sense "using a tool" as in
"write with a pen". So your second sentence requires で:

> このボールペンで電話番号を書いてください

Second question about から: when you go **out** of a location, you use を
particle in this situation, not から. Note that から is used as well in every day
life depending on the situation but at JLPT 5 level, を will be used in your
textbook and exercises.




First question about で: かみに means " **on** the paper" ("write on the paper")
while かみで would mean " **with** the paper" in a sense "using a tool" as in
"write with a pen". So your second sentence requires で:

> このボールペンで電話番号を書いてください

Second question about から: when you go **out** of a location, you use を
particle in this situation, not から. Note that から is used as well in every day
life depending on the situation but at JLPT 5 level, を will be used in your
textbook and exercises.

