Why do you not go? (Direct)
He asked why you did not go. (Indirect)
524. When an interrogative clause is repeated in the body of another sentence, use the interrogation point after the clause, and begin the clause with a capital letter. For example:
The question, Shall we be involved in war?, should be settled by the people.
THE EXCLAMATION POINT
525. The exclamation point should be placed after words, phrases or sentences that express strong emotion. For example:
Oh! When shall peace reign again?
Alas! I am undone!
To the firing line! the battle rages!
526. Ordinarily the exclamation point is placed immediately after the interjection or word used as an interjection, but frequently when the strong emotion continues throughout the expression, the exclamation point is placed at the close of the sentence instead of after the interjection, even though the interjection comes first in the sentence. For example:
On, Comrades, on!
Charge, Chester, charge!
THE DASH
527. The dash is a much abused punctuation mark. A great many writers who are not familiar with the rules of punctuation use a dash whenever they feel the need of some sort of a punctuation mark. Their rule seems to be, "whenever you pause make a dash." Punctuation marks indicate pauses but a dash should not be used upon every occasion. The dash should not be used as a substitute for the comma, semi-colon, colon, etc. In reality, the dash should be used only when these marks cannot be correctly used.
528. The chief use of the dash is to indicate a sudden break in the thought or a sudden change in the construction of the sentence. For example:
In the next place—but I cannot discuss the matter further under the circumstances.
529. The dash is frequently used to set a parenthetical expression off from the rest of the sentence when it has not as close connection with the sentence as would be indicated by commas. As for example:
The contention may be true—although I do not believe it—that this sort of training is necessary.
530. The dash is also used in place of commas to denote a longer or more expressive pause. For example:
The man sank—then rose—then sank again.
531. The dash is often used after an enumeration of several items as a summing up. For example:
Production, distribution, consumption—all are a part of economics.
532. A dash is often used when a word or phrase is repeated for emphasis. For example:
Is there universal education—education for every child beneath the flag? It is not for the masses of the children—not for the children of the masses.
533. If the parenthetical statements within dashes require punctuation marks, this mark should be placed before the second dash. For example:
War for defense—and was there ever a war that was not for defense?—was permitted by the International.
This sight—what a wonderful sight it was!—greeted our eyes with the dawn.
534. The dash is also used to indicate the omission of a word, especially such words as as, namely, viz., etc. For example:
Society is divided into two classes—the exploited and the exploiting classes.
535. After a quotation, use the dash before the name of the author. For example:
Life only avails, not the having lived.—Emerson.
536. The dash is used to mark the omission of letters or figures. For example:
It happened in the city of M—.
It was in the year 18—.
PARENTHESIS
537. In our study of the comma and the dash we have found that parenthetical statements are set off from the rest of the sentence sometimes by a comma and sometimes by a dash. When the connection with the rest of the sentence is close, and yet the words are thrown in in a parenthetical way, commas are used to separate the parenthetical statement from the rest of the sentence.
538. When the connection is not quite so close, the dash is used instead of the comma to indicate the fact that this statement is thrown in by way of explanation or additional statement. But when we use explanatory words or parenthetical statements that have little or no connection with the rest of the sentence, these phrases or clauses are separated from the rest of the sentences by the parenthesis.
539.GENERAL RULE:—Marks of parenthesis are used to set off expressions that have no vital connection with the rest of the sentence. For example:
Ignorance (and why should we hesitate to acknowledge it?) keeps us enslaved.
Education (and this is a point that needs continual emphasis) is the foundation of all progress.
THE PUNCTUATION OF THE PARENTHESIS
540. If the parenthetical statement asks a question or voices an exclamation, it should be followed by the interrogation point or the exclamation point, within the parenthesis. For example:
We are all of us (who can deny it?) partial to our own failings.
The lecturer (and what a marvelous orator he is!) held the audience spellbound for hours.
OTHER USES OF THE PARENTHESIS
541. An Interrogation Point is oftentimes placed within a parenthesis in the body of a sentence to express doubt or uncertainty as to the accuracy of our statement. For example:
In 1858 (?) this great movement was started.
John (?) Smith was the next witness.
542. The parenthesis is used to include numerals or letters in the enumeration of particulars. For example:
Economics deals with (1) production, (2) distribution, (3) consumption.