Here we will practice applying one of the most basic and yet also most troublesome rules of grammar: in the present tense, a verb must agree in number with its subject. Put simply, this means that we have to remember to add an -s to the verb if its subject is singular and not to add an -s if the subject is plural. It's really not a hard principle to follow as long as we can identify the subject and verb in a sentence. Let's have a look at how this basic rule works by clicking here.
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