This document discusses non-finite clauses and verbless clauses. It covers four main topics: 1) The four kinds of non-finite clauses including to-infinitival, bare infinitival, gerund-participial, and past participial clauses. 2) The form and functions of non-finite clauses. 3) The catenative construction where non-finite clauses are complements of verbs. 4) Verbless clauses which can function as complements of prepositions or directly as adjuncts.