This document discusses -ER verbs in French. It explains that -ER verbs translate to "to____" in English, like "nager" means "to swim" and "travailler" means "to work." It emphasizes that verbs need to be conjugated, or have their endings changed, to make sense grammatically. For example, with -ER verbs the conjugation is: je + verb + e, tu + verb + es, and il/elle + verb + e. This rule applies to all -ER verbs like "aimer" and "danser." Proper conjugation is important for verbs to make sense in a sentence.