Carlos Cajina from Nicaragua asks: Compound adjectives can be: 1. Joined by a hyphen 2. Appear as a single word 3. Appear as two separate words. Is there a rule - or set of rules - to know when to use ...
Tomokje, studying English in The Netherlands, writes: Sometimes when I read English newspapers or books I see some words with hyphens between them, for example densely-populated. I do not know what ...