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Eventualities, predicates, arguments : some landmarks. 1. After an introductory presentation of basic categories of eventualities, such as events, actions, states, situations, facts, of the Lexicon, such as proto-roles, ranks in argupent-structures, we address controversial topics : anti-causative alternation predicates, the Inaccusative Hypothesis, motional predicates. On the first topic, we defend a causativity-type analysis, on the second one, an achievement/activity contrast-based description of sets, and on the third an argument-structure based. one.