Abstract: A trans-clause is constructed by two or more than two clauses, at least one of which is a non-embedded dependent clause. A non-embedded dependent clause is not an element of any other clause, but it depends syntactically and/or semantically on other clause or the whole sentence. In order to give a throughout observation, a rhetoric -pragmatic approach is needed as well as a syntactic-semantic one. An exploration of the construction of a Chinese trans-clause may benefit both Chinese grammar study and teaching Chinese as a second language.