Could you please tell if my sentences sound proper English?
1) The presence of calcium and magnesium in water causes water to be hard.
2) People use tools to transform/ turn/ make hard water into soft water.
Thank you for your repy.
Last edited by arzgol; 04-Aug-2011 at 21:45.
People use systems or equipment to soften hard water.
Thank you so much.
Is my first sentece correct, or should I use the verb ''make''?
Any of the words "transform/turn/make" would be OK. I have an objection to the word "tools"