Common Grammar Mistakes: No Comma before 'Which'

One of the most common grammar mistakes people make is forgetting to use a comma before the word 'which' in a sentence. This error can lead to confusion and can change the meaning of a sentence. Let's look at some examples to understand this better.

1. Using 'Which' in a Non-Restrictive Clause:

When 'which' is used in a non-restrictive clause, which provides additional information about the noun it modifies, it should be preceded by a comma. Here's an example:

• The book, which is on the table, is mine.

In this example, the phrase 'which is on the table' gives additional information about the noun 'the book.' Since it is a non-restrictive, or non-essential, clause, it is set off by commas.

2. Using 'Which' in a Restrictive Clause:

On the other hand, when 'which' is used in a restrictive clause, which provides necessary information to understand the meaning of the noun it modifies, it should not be preceded by a comma. Here's an example:

• The car which is parked outside belongs to John.

In this example, the phrase 'which is parked outside' is necessary to understand which car we are referring to. If we were to use a comma before 'which,' it would suggest that all cars belong to John, not just the one parked outside.

Remember, using a comma before 'which' can completely change the meaning of a sentence.

Using a Grammar Checker to Avoid Mistakes:

Proofreading your work carefully is essential to catch grammar mistakes such as forgetting to use a comma before 'which.' However, it's not always easy to spot these errors on your own. This is where a grammar checker like Linguix can be beneficial. Linguix can help you identify and correct grammar mistakes in your writing, ensuring that your work is clear, concise, and error-free.