When to use is and are?
When deciding whether to use is or are, look at whether the noun is plural or singular. If the noun is singular, use is. If it is plural or there is more than one noun, use are. The cat is eating all of his food.
What is the difference of IS and are?
Well, the main difference between “is” and “are” is that “is” is singular while “are” is plural. This means a singular subject would be paired with the singular verb “is.” As an example, … Note: If you ever decide to change the subject of your sentence to simply “DNA,” then use “is” instead of “are.”
When to use is and it’s in a sentence?
Use replacement to double check. If you're reading a sentence and you're not sure if "its" or "it's" is appropriate, try replacing the word with "it is" or "it has." If you can replace the "it's" or "its" with "it is" or "it has," then you should use an apostrophe ("it's").