To Copy, To Photograph, To Take A Picture
transitive verb, godan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means copy so you know this means to copy. You know this word means "to copy" because it ends with す. You're copying the documents you need to sue (す) someone who screwed you over.
うつす
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: You have to remember the うつ part. To remember that, think of yourself as a beatboxer. You're saying うつうつうつ over and over again. Thing is, the other beatboxer is going to copy everything you do. That's why you're suing him.
今日のクラスのノート、写してもいい？
Can I copy your notes from today's class?
カメラは平気ですが、他の人は写さないで下さいね。
Cameras are fine, but please do not take photographs of others.
わたしのサイン、写したでしょ？
You copied my signature, didn't you?