1. Sentence fragments (Sect. 2 in Harbrace)
A fragment is an incomplete sentence that starts with a capital letter and ends with a period. A fragment may lack a subject, verb, or both.
Some fragments have subjects and verbs but express incomplete thoughts. These fragments occur when a dependent or subordinate clause is punctuated as if it were a complete sentence.
Dependent Clause Fragment: Although life has been chaotic lately.
The above fragment could be corrected by deleting Although or by adding an independent clause to the fragment.
Corrected: Life has been chaotic lately.
Corrected: Although life has been chaotic lately, I am enjoying myself.
2. Run-on, fused, or run-together sentences (Sect. 3 in Harbrace)
A fused sentence occurs when two independent clauses (two complete sentences) are not separated by a coordinate conjunction or are not separated by appropriate punctuation.
A fused sentence can be corrected by separating the independent clauses with a period or a semicolon or by joining them with a comma and a coordinate conjunction.
Fused Sentence: Tom is on a seafood diet he eats any food he sees.
Corrected: Tom is on a seafood diet; he eats any food he sees.
3. Comma splice (Section 3 in Harbrace)
A comma splice consists of two or more independent clauses that are joined simply by a comma without a coordinate conjunction. (The coordinate conjunctions are and, or, but, nor, for, so, yet.)
Example: I was hungry and tired, I ate quickly and went to bed.
Corrected: I was hungry and tired, so I ate quickly and went to bed.
4. Disagreement of subject and verb (Section 6a in Harbrace)
A verb must agree with its subject in number. If the subject is singular, the verb must be singular. If the subject is plural, the verb must be plural.
Most problems with agreement occur because of some difficulty related to the subject of a sentence. These difficulties include problems in correctly indentifying the subject and correctly recognizing the subject's number.
Faulty Subject/Verb Agreement: One of my brothers live in Orlando.
Corrected: One of my brothers lives in Orlando. (The subject of the sentence is One.)
Subject/Verb Agreement Practice 1 (with answer key)
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