“Virtue may be assail’d,
but never hurt,
Surpris’d by
unjust force, but not inthrall’d.”—Milton.
“Mortals whose pleasures
are their only care,
First wish to be imposed
on, and then are.”—Cowper.
OBS. 17.—From the foregoing examples, it may be seen, that the complex and divisible structure of the English moods and tenses, produces, when verbs are connected together, a striking peculiarity of construction in our language, as compared with the nearest corresponding construction in Latin or Greek. For we can connect different auxiliaries, participles, or principal verbs, without repeating, and apparently without connecting, the other parts of the mood or tense. And although it is commonly supposed that these parts are necessarily understood wherever they are not repeated, there are sentences, and those not a few, in which we cannot express them, without inserting also an additional nominative, and producing distinct clauses; as, “Should it not be taken up and pursued?”—Dr. Chalmers. “Where thieves do not break through nor steal.”—Matt., vi, 20. “None present could either read or explain the writing-.”—Wood’s Dict., Vol. i, p. 159. Thus we sometimes make a single auxiliary an index to the mood and tense of more than one verb.
OBS. 18.—The verb do, which is sometimes an auxiliary and sometimes a principal verb, is thought by some grammarians to be also fitly made a substitute for other verbs, as a pronoun is for nouns; but this doctrine has not been taught with accuracy, and the practice under it will in many instances be found to involve a solecism. In this kind of substitution, there must either be a true ellipsis of the principal verb, so that do is only an auxiliary; or else the verb do, with its object or adverb, if it need one, must exactly correspond to an action