I'm busy.

Today's easy and useful Japanese short phrases!
Let's learn to speak real Japanese.

I'm busy.

isogashii.　いそがしい。

I'm very busy.

chou isogashii.　ちょう いそがしい。
sugee isogashii.　すげえ いそがしい。

*"chou"　"sugee"　They are slang that meaning "very" "super" "special"

I'm ready.

iiyo.　（♂♀）　いいよ。

It doesn't work.

kowareteru.　こわれてる。
tsukaenai.　つかえない。

* "kowareteru" meaning "It is broken."
* "tsukaenai" meaning "It is not usable."

It is dangerous!

abunai!　あぶない！
yabai!（*slang）　やばい！