To examine a sentence's grammar, ensure sure the various parts of speech and punctuation marks are appropriately employed. To begin, establish if the sentence is single or plural so that the parts of speech are appropriately matched. Next, identify each part of the sentence including the subject, object, verb, and modifier if one exists. Check to see that these elements are used correctly. For example, if you were to write "We love English literature," then the sentence would be singular because it describes only one thing (in this case, our passion). However, if you wrote "They loved English literature," then the sentence would be plural because it described more than one thing (in this case, several universities around the world). After determining whether the sentence is singular or plural, look at the parts of the sentence one by one. If there is a subject, determine if it is singular or plural. If a singular noun acts as the subject of the sentence, use a singular verb. If a plural noun acts as the subject, use a plural verb. For example, if you were to write "The students like studying English," then the sentence would be singular because it describes only one thing (in this case, some students). However, if you wrote "Some students like studying English," then the sentence would be plural because it describes more than one thing (in this case, several students).