CO-ORDINATE FORMS OF CONJUGATION. 146. Besides the common form of conjugation already given, there are three other forms-the Progressive, Emphatic, and Interrogative. PROGRESSIVE FORM. 147. The PROGRESSIVE FORM is used to express action or state in progress at the time referred to. It is formed by prefixing the various modes and tenses of the verb to be. to the present participle of the principal verb. The PROGRESSIVE FORM may be used in all the mode and tenses of the regular conjugation; as, "John is writing;" "John must have been writing." EMPHATIC FORM. 148. The EMPHATIC FORM is used to intensify the action or state expressed by the verb. It is formed by prefixing the present and past tenses of the verb do to the simple form of the principal verb. It is only used in the present and past tenses, Indicative and Subjunctive, and in the present tense Imperative; as, "John does write;" "If John did write;" "John, do you write!" INTERROGATIVE FORM. 149. The INTERROGATIVE is that form of the verb which is used in asking questions. It is formed by placing the subject between the auxiliary and the principal verb; or by placing the subject after the verb, if it has no auxiliary. It is used in all the tenses of the Indicative and Potential modes. Examples: "Has he written?" "Writes he?" REMARK. The past perfect and future tenses have no emphatic form. They may be inflected in the progressive and interrogative forms, by undergoing modifications similar to that of the present perfect. REMARK.—Besides the auxiliary may, all others peculiar to this mode may be employed in conjugation. The remaining tenses may be inflected in a similar manner. REMARK.-The other tenses of this, and the remaining modes, may be inflected in like manner. |