Separated Subjects and Verbs
Separation of the subject and the verb by words or phrases also cause common error in subject verb agreement.. Look at the following sentence:
- Jake and Clark, who both studied Mathematics and English last year, have planned to only study English this year.
Here is the phrase “who both played football and basketball last year”. These are separating the subject and the verb. The subject, Jake and Clark, is plural and therefore necessarily match the plural form of the verb 'have.'
Look at this example,
- The fact that Jake didn't study for the test prevents her from securing an A. ('fact' is the singular subject, which matches the singular form of the verb 'prevents')
To avoid subject-verb agreement errors the key element is to ignore all the extra words and match the true subject of the sentence, not just the noun that is the closest.
Adjective and Adverbs
One more aspect in order to avoid error in agreement is that adjectives and adverbs must also agree with the words they adjust. So what is adjective? It is a word that modifies a noun. For adverb is a word that modifies a verb, adjective or another adverb.
Adjectives should matched with nouns always. Whereas, and adverbs must be matched with verbs, adjectives or adverbs always.
Many time when words end at ‘ly’ they are referred as adverb. Such as quick ly or 'quickly' must be matched with a verb, adjective, or adverb. Here is the example,
- Ali is a quick runner.
- Ali runs quickly.
Why is 'quick' used in the first sentence, but 'quickly' in the second? In the first sentence, 'quick' is modifying the word 'runner, which is a noun.
On the other hand, in the second sentence 'quickly' is modifying the word 'runs', which is a verb. You cannot write, ‘Ali runs quick.' This is the incorrect form as an adjective cannot modify a verb.
So modify the actual word in order to avoid this error.