Benign paroxysmal positional vertigo is caused by calcium debris in the semicircular canals (canalithiasis), usually the posterior canal. Medications generally are not recommended for the treatment of this condition.
In grammar, tense is a category that expresses time reference. Tenses are usually manifested by the use of specific forms of verbs, particularly in their conjugation patterns. Basic tenses found in many languages include the past, present, and future. Some languages have only two distinct tenses, such as past and nonpast, or future and nonfuture.
Subjects, Verbs, and Clauses. In its simplest form, an English sentence has two parts: a subject and a verb that express a complete thought when they are together. 1  The subject shows who or what is doing the action.2  It is always some form of noun or pronoun.3  The verb shows the action or the state of being.n its simplest form, an English sentence has two parts: a subject and a verb that express a complete thought when they are together. 1  The subject shows who or what is doing the action. 2  The verb shows the action or the state of being.