A reliable method
- Identify the complete clauses and the intended meaning.
- Choose punctuation that joins those structures correctly.
- Check subject-verb agreement, modifiers, and possessives.
- Reread the whole revision, not only the changed word.
Example 1
The storm ended. The team returned to the field. A writer wants to combine these two closely related complete statements into one sentence without adding a coordinating conjunction.
Which revision is correctly punctuated?
- The storm ended, the team returned to the field.
- The storm ended; the team returned to the field.
- The storm ended the team returned to the field.
- Because the storm ended.
Answer B: The storm ended; the team returned to the field.
Each original statement is an independent clause. A semicolon can join them. The comma-only version is a comma splice, the unpunctuated version is a run-on, and the because clause is an incomplete fragment.
Example 2
The collection of historical maps ___ stored in a climate-controlled room. The sentence describes a single collection, even though it contains many maps.
Which word completes the sentence in Standard English?
- are
- have
- is
- were
Answer C: is
The subject is the singular noun "collection." The plural "maps" belongs to a prepositional phrase and does not control the verb. "Is stored" supplies the required singular passive construction.
Common mistakes
- A comma alone does not normally join two independent clauses.
- A phrase between a subject and verb does not change the subject number.
Practice without the answer first
Practice 1
A group of students walked toward the library and noticed its new entrance. A writer wants an introductory modifier to describe who was walking.
Which sentence avoids a dangling modifier?
- Walking toward the library, the entrance impressed the students.
- Walking toward the library, it was the entrance that impressed the students.
- Walking toward the library, the new design was impressive.
- Walking toward the library, the students noticed the new entrance.
Practice 2
Three teachers share one office. A notice identifies that office as belonging to all three of them.
Which phrase correctly expresses that shared possession?
- the teachers' office
- the teacher's office
- the teachers's office
- the teacher office's
Practice 3
The writing workshop teaches students to plan a draft, organize evidence, and ___. The writer wants three parallel verb phrases describing workshop skills.
Which completion maintains parallel structure?
- revision of sentences
- revising sentences
- revise sentences
- sentences are revised
Answers and explanations
Practice 1
Answer D: Walking toward the library, the students noticed the new entrance.
The subject immediately following the introductory phrase must be the walkers. Only the last option makes the students the grammatical subject; the entrance, design, and dummy "it" cannot perform the walking.
Practice 2
Answer A: the teachers' office
The plural noun "teachers" already ends in s, so its possessive takes an apostrophe after that s. The singular possessive would identify one teacher; the other forms do not express the intended possession correctly.
Practice 3
Answer C: revise sentences
"Plan," "organize," and "revise" are parallel base-form verbs sharing the introductory "to." A noun phrase, an -ing form, or a separate clause breaks that construction.
All passages, questions, and rationales on this page are original Testinar skill practice. They are not official exam material or a complete timed section.
