* Vowel: Words starting with vowels like "a", "e", "i", "o", "u", "y" will be considered singular. Examples: "un avion" (an airplane), "une école" (a school).
* Mute "h": Words starting with "h" that are not pronounced will also be considered singular. Examples: "un hôtel" (a hotel), "une heure" (an hour).
Important Note: Words starting with "h" that are pronounced (aspirated "h") are treated like words beginning with a consonant. Example: "un héros" (a hero).