The objective relations between the action and the subject or object of the action find their expression in language as the grammatical category of voice. The verbal category of voice shows the direction of the process as regards the participants of the situation reflected in the syntactic construction.
The voice of the English verb is expressed by the opposition of the passive form of the verb to the active form of the verb. The sign marking the passive form (the strong member of the opposition): the auxiliary be (get, become sometimes) + the past participle of the conjugated verb (be ... en).
The passive form expresses reception of the action by the subject of the syntactic construction (the passive subject, denoting the object of the action).
The active form leaves this meaning unspecified (expresses non-passivity).
Not all the verbs taking an object are used in the passive (the passive form is alien to many verbs of the statal subclass: have, belong, cost, resemble, fail, misgive, etc).
Thus according to their relation to the passive voice, all the verbs can be divided into two large sets: