A non-universal Immediate Dominance Condition on identity deletion is proposed to explain the systematic differences between languages like Chinese and languages like English in their respective patterns of coordination, topicalization, dislocation, and relativization. By assuming that this condition holds for languages of the Chinese-type, but not for those of the English-type, it is possible to account for the well-formed coordinations of all languages by means of a single universal principle of coordination reduction, and it is possible to derive the well-formed (...) topicalizations, dislocations, and relative clause constructions of all languages by means of the same set of universal principles of Copying, Deletion, and Pronominalization. (shrink)