Course Content
Sentence Structure
A sentence is a group of words that can stand alone. To express a complete thought, it must contain a subject and a verb. Every sentence consists of at least one clause or more, and most have a number of phrases as well. A clause is a group of words that contains a subject and a verb. A phrase is a group of words that does not have both a subject and a verb. E.g. Dogs bark. - This is a sentence with subject and verb E.g. The explorers slept in yak-hide tents. – This is a clause E.g. Looking out of the window, John saw a flying saucer. – Highlighted is the phrase.
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Mastering “Sentence Structure” for SAT Success

Nonessential information is the information not necessary to the main point of the sentence that uses a comma or commas to separate from the rest of the sentence.

WRONG: The domestic cat of which there are more than 40 breeds, is a member of the feline family.

RIGHT: The domestic cat, of which there are more than 40 breeds, is a member of the feline family.

** To determine if a portion of text is nonessential information, try reading the sentence without those words. If the sentence makes sense, the words in question are probable nonessential.