This study aims to examine the syntactic behaviors of control verbs using two diagnostic tests; long-distance passivization and permissibility of that-clause. Four different types of control verbs were identified from the results drawn from these tests. The first type is intend/plan type control construction, which allows LDP and that-clauses (A-movement type). The second type of control verbs is hope and wish that allow that-clauses but not LDP. Since these verbs allow that-clauses, the subject of the embedded clause can be independently licensed (PRO-type). The third type is communicative control verbs such as claim, argue, propose, agree, and suggest. These control verbs are found to show the syntactic characteristics of both A-movement type and PRO type. In A-movement control structure, these control verbs allow not only LDP but also backward binding. Conversely, in PRO-type control constructions, these verbs allow NOC PRO in embedded clauses, or both partial control and split control, but not LDP. The last type we examined is control verbs such as try, attempt, and seek which do not allow that-clauses at all. These control verbs are the only type of control verbs which can only have OC PRO as the subject of the embedded clause.