Matching verbs in compound tenses and humors is probably the most difficult – take a look at verb matching for more details. Well, it becomes obvious that it`s too easy. Suppose you mean interesting movies and plays. The French word film is masculine, but the word or expression pièce (de théâtre) (the French for “jeu” in the theatrical sense) is feminine. What agreement should be put on the adjective of interest? Similarly, if we mean a red pen and a pencil (where both elements are red), do we make the adjective singular or plural (and again, with what word do we do it)? Collective nouns, although singular, convey the idea of multiple entities (a group, a set…); Similarly, we can refer to a fraction of a group using fractional words (half, part of…). .