The purpose of this research is to account for some syntax-semantics mismatches found in English coordination. Following Culicover (1972), Culicover & Jackendoff (1997), Yuasada & Sadock (2002), Blühdorn (2008), and Keshet & Medeiros (2019), the current paper supports a novel type of coordinating conjunction, Pseudo-Coordination, in which the expressions with the coordinators like AND/OR get interpreted as subordinating clauses such as conditional-if, concessive-nevertheless, and negative-conditional-unless. The advantages of the current research are that first, it accounts nicely for the observations that Imperatives followed by AND and OR have the interpretations of subordinators, although they are prima facie coordinators. Secondly, the fact that indefinite DP/QPs in English without any coordinators carry the conditional meaning can easily be accounted for if there is a null conditional subordinator sitting above the simplex sentence. The ramification of this account sheds light on the nature and properties of English coordination.