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Quiz Introduction

One of the biggest hurdles in mastering written English—especially for students, second language learners, and even native speakers—is identifying and correcting common sentence errors. These errors can affect clarity, cause confusion, or unintentionally change the meaning of a sentence. The most frequent offenders are sentence fragments, runon sentences, and misplaced modifiers.

A sentence fragment is an incomplete thought masquerading as a full sentence. It might be missing a subject, a verb, or both. For example, “Because she was tired.” This leaves the reader hanging—because what happened because she was tired? In formal writing, fragments should be avoided unless used deliberately for stylistic effect, such as in creative writing or advertising.

Runon sentences, on the other hand, occur when two or more independent clauses (complete thoughts) are joined together improperly. For instance, “He loves playing guitar he practices every day” is a runon because there’s no punctuation or coordinating conjunction to separate the two thoughts. These make writing feel rushed or chaotic, and they often confuse readers.

Then there are misplaced modifiers, which are tricky because they involve parts of a sentence being out of logical order. A modifier is a word or phrase that adds detail to a sentence, but if it’s in the wrong place, it can make the sentence funny—or just confusing. For example, “Covered in mustard, Jane ate the hotdog.” It sounds like Jane was covered in mustard rather than the hotdog.

See also

English Test – Business English

While these sentence issues can be subtle, learning to identify and fix them is essential for developing strong, effective writing skills. Mastery of sentence structure not only improves grammar but also enhances a writer’s ability to communicate clearly and professionally.

This quiz is designed to test your understanding of these common sentence errors. Each question will challenge you to spot the mistake and select the most accurate revision or explanation. Review the concepts carefully, read each option thoroughly, and use what you’ve learned to make the best choice.