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