Hi there, got his very simple question (not one I can answer though...)<br/><br/>When is the plural form of a unit used? <br/><br/>For any amount less than unity, is it proper to give them plurality? (am I missing some linguistic reasoning here)<br/><br/>For example, is the following usage of the units correct (singular or plural)?<br/><br/>It weighs 0.5 <i>tons</i>.<br/><br/>Add 0.5 <i>grams</i> of salt.<br/><br/>How about "half a ton"?<br/><br/>It weighs half a <i>ton</i>. (which means 0.5 ton(s)!?)