Twice, with a comma before and between, like this: The frumpy lecturer went boringly on and on ad infinitum and even beyond, etc, etc.
Actually it should look like this (cars, airplanes, trains, etc.). But if the sentence ends with an abbreviation, the single period will serve to end the sentence, as in cars, airplanes, trains, etc. You do not use double periods. You can, however, use a question mark or exclamation point after a period that ends a sentence. Were you talking about cars, airplanes, trains, etc.? If this looks unusual, it is because abbreviations, such as etc., are generally avoided at the ends of sentences.
Like this: I reject to etc etc etc
they are just there to help you start off or end a sentence
Yes you do.
Verbs don't come at the end of a complete sentence. If you have a command like -- Sit down! -- then this sentence consists of a verb only.
No, if "etc." is at the end of a sentence in parentheses, you only need one period. The period in "etc." serves as the punctuation for the abbreviation, and there is no need for an additional period to end the sentence.
No, you do not put an extra period after "etc." since the period at the end of "etc." serves as the ending punctuation for the sentence.
Yes, when using a double period abbreviation (like "etc." or "e.g."), you should only use one period at the end of a sentence. The abbreviation's final period serves as the sentence's concluding punctuation. Therefore, it should appear as "She enjoys outdoor activities, such as hiking, biking, etc." instead of "etc..".
You can end a sentence with a period.Hey, end it with an exclamation mark!What was the question?
Yes, if the ellipsis falls at the end of a sentence, you should use a period after it to indicate the end of the sentence.
No, you do not need to add an additional period if "etc." is within parentheses at the end of a sentence. The period that ends the abbreviation "etc." also serves as the sentence-ending punctuation.
Actually it should look like this (cars, airplanes, trains, etc.). But if the sentence ends with an abbreviation, the single period will serve to end the sentence, as in cars, airplanes, trains, etc. You do not use double periods. You can, however, use a question mark or exclamation point after a period that ends a sentence. Were you talking about cars, airplanes, trains, etc.? If this looks unusual, it is because abbreviations, such as etc., are generally avoided at the ends of sentences.
"Etc" will usually come at the end of a list, so no. I believe that it is optional to put a period after it if it is not at the end of a sentence.
Like this: I reject to etc etc etc
No. You can never end a sentence with a preposition. Prepositions relate to place and/or time, examples being words like "at", "on", "in", "under", "during", "with", "while", etc.
One period. The period in etc. also functions as the period for the end of the sentence.
It is widely accepted that the final period after the abbreviation does double duty in ending the sentence and the abbreviation at the same time.