• It seems to reason that a contraction would be two words that have been made shorter by adding an apostrophe where letters have been removed because the term "contract" implies "to press together." 
• Knowing the fundamental guideline for writing contractions makes it easy to write them correctly.
• When you produce the contraction, an apostrophe is used in lieu of the letters that were deleted from the original phrase.
• When you combine "is" and "not" to get "isn't," you take the "o" out of "not" and put an apostrophe in its place. The word "won't" is a well-known exception to this rule. 
• Although it is a condensed version of "will not," it is clear that the word "will" is not at all included in the contraction.

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Multiple contracts

While certain numerous contractions may appear clumsy, they are really rather common in spoken English. People frequently use phrases like this.

For example:

She wouldn't have been held up at security if  she hadn't shouted at the executive.

When speaking, we frequently employ contractions since the words seem to blend together naturally. In spoken English, this is perfectly acceptable, yet it is not seen as excellent writing practice.

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