Fixing grammatical inconsistencies.

These questions test your command of grammar. In error spotting, you find the part of a sentence that contains a mistake, or decide that there is none. In sentence correction, part of a sentence is underlined and you choose the best replacement.

Common types of errors

• Subject-verb agreement: a singular subject needs a singular verb, even when words between them are plural.
• Tense: the verb tense must suit the time words and stay consistent.
• Pronouns:use the correct case, such as "my friend and I" as a subject.
• Prepositions: many words take fixed prepositions, such as angry with and prefer to.
• Nouns and articles: uncountable nouns like information and advice have no plural.
• Parallelism and modifiers: items in a list should have the same form, and a modifier must refer clearly to the right word.

How to solve questions

1. Read the whole sentence and find the subject and the main verb.
2. Check each part for the common errors listed above, one at a time.
3. In error spotting, if every part is correct, choose "No error".
4. In sentence correction, choose the option that fixes the error without changing the meaning.
5. Pick "No improvement" only when the underlined part is already correct.