The most common grammar mistake involves the ability to count. Fortunately, you only have to be able to count higher than 1.
If I write, “A man buys a house,” you can count the number of men: 1.
If I write, “Men buy houses,” you need to count higher than 1 because this sentence describes more than 1 man.
Now, let’s look at these two samples more carefully.
In the first sentence, “A man buys a house,” the subject is 1 man, described as “a man.” The verb “buys” ends with the letter “s.” When we conjugate verbs in the present tense, we can see that verbs for the third person singular end with the letter “s.”
First person, singular subject: “I buy.”
Second person, singular subject: “You buy.”
Third person, singular subject: “He buys.” (Notice the “s” at the end of the verb. It will be important in a moment.) Continue reading