English expresses doubt along the same lines as it expresses fear and prevention. It uses a head verb or adjective which explicitly states the sensation, such as doubt, doubtful, or dubious. To this a subordinate clause introduced by that is appended. The subordinate clause can also be introduced by if or whether with no difference in meaning. Latin requires an expression of doubt as well. It also also requires a subordinate clause whose introductory conjunction depends on whether the expression of doubt is positive or negative. The verb of the subordinate clause is in the subjunctive according to the sequence of tenses. This chapter also presents matching exercises with unedited Latin excerpts and rough English translations. A short reading relating to the adventures of Hercules is also provided. These readings give the course a strong sense of narrative cohesion, providing opportunities to develop comprehension and translation skills.