Final answer:
True, subject-verb agreement is a common error where the verb must agree in number with its subject. Misunderstandings often occur when intervening clauses or phrases obscure the true subject, leading to incorrect verb forms.
Step-by-step explanation:
Subject-verb agreement is indeed a common source of error in writing. It refers to the grammatical rule that a singular subject must be paired with a singular verb, and a plural subject must be paired with a plural verb. Errors can occur, especially when phrases or clauses separate the subject and verb, potentially confusing the writer about the number of the subject. For example, in the sentence 'The play with such true witticisms and parables come highly recommended,' the verb 'come' should actually be 'comes' because the true subject 'The play' is singular.
To ensure correct subject-verb agreement, one should identify the main subject of a sentence and choose the verb that agrees in number, regardless of words that come between them. It should be noted that while some English dialects might deviate from these rules, formal writing typically adheres to them for the sake of clarity and convention.