L' Le La
when do you use L' instead of la or le?
L' comes before a vowel sound like in "l'arbre" (the tree) or "l'hôtel" (the hotel, with a silent h in French). You can use it with either gender--just make sure to also memorize the gender of the nouns, since you'll need it for other constructions. (Those are both masculine, for example.)
The explanation of anomalocaris is correct. But it refers to cases where the noun is masculin. 'La' is used before a feminin noun. For example: 'la maison' and ' la fille'.