This document discusses modals and their use with passive voice. It provides examples of common modals like can, should, and might used with active and passive verbs. The structure of modals in the present tense and with passive voice is explained. Examples are given of modal verbs used with passive verbs, such as "Diseases can be caused by viruses" and "An injury should be treated immediately." Readers are given a practice activity to write modal verb structures in the passive voice.