Relative clauses are one of the most complicated syntactic structures, and the subject-and object-extracted clauses (SC and OC, respectively) have been taken by linguists and psychologists as the key topic in exploring syntactic complexities.To investigate how Chinese subject-and object-extracted clauses are processed during comprehension, the clinical linguistic examination of two aphasic patients by the use of three self-designed experiments (Experiment Ⅰ-The sentence-picture matching comprehension of clauses when the clauses' subjects a...