彼女は犬を見ると顔を顰めた。

She made a face when she saw a dog.

半角カタカナをインターネット上の色んな所で使えば、いつか顰蹙をかいまくる事になるよ。

If you go around the Internet, using half-width katakana in various places, eventually you're going to end up pissing off a lot of people.