Winds Strengthen in L.A. as Wildfire Death Toll Rises to 16 At a Palisades mobile home park, middle-class dreams lie in ruins. Watch Duty, a wildfire-tracking app, provides a lifeline in Los ...

A preposition is a word that tells you where or when something is in relation to something else. Examples of prepositions include words like 'after', 'before', 'on', 'under', 'inside' and 'outside'.