Sentence is a fragment

Small agreement errors - is vs are, his/her vs their, singular they - are easy to miss but quick to fix. Below are tight rules, clear examples, tone-aware choices (work, school, casual), and direct rewrites you can copy.

Quick answer

Match number and meaning. A singular subject (the student) takes a singular verb (is, has) and a singular antecedent (he/she or singular they). A plural subject (the students) takes a plural verb (are, have) and plural pronouns (they, their).

Singular → singular verb: The student is ready.
Plural → plural verb: The students are ready.
Use singular they for gender-neutral language: The student is ready; they will arrive soon.
Fast fix: find the subject, then align verb and pronoun with that subject.

Core explanation: subject-verb and pronoun-antecedent agreement

Agreement requires two things: the grammatical number (singular/plural) and the intended meaning. Confirm both before choosing a verb or pronoun.

If the subject is one person or thing, use singular verbs and singular antecedents: the student → is, has, he/she or singular they.
If the subject is more than one, use plural verbs and pronouns: the students → are, have, they/their.
Singular they: accepted for gender-neutral reference. It behaves like a singular antecedent with plural-looking pronoun forms.

Examples:

Singular: The student is finishing the paper; they need one more hour.
Plural: The students are finishing their papers; they need one more hour.

Is "The student is" correct?

Yes - "The student is" is correct whenever the subject is a single student. The common problems come from misreading the subject, mixing numbers, or awkward pronoun choices in the following clause.

Correct: The student is ready for the presentation.
Wrong (number mismatch): The student are ready. → Change are to is or change the subject to students.
Wrong (pronoun mismatch): The students is here. → Change is to are or change the subject to student.

Hyphenation and spacing pitfalls

Some errors look like agreement mistakes but are actually spacing or hyphenation problems. Treat those separately: verify whether words are normally one word, hyphenated, or two words.

Write what dictionaries and common usage show: e.g., "courtroom" not "court room" (context dependent).
A misplaced space can hide the real subject and lead you to the wrong verb.
When in doubt, test the sentence with the suspected subject next to the verb: does it still make sense?

How it sounds in real writing (work, school, casual)

Context affects tone and pronoun choices. Here are natural uses that show correct agreement and style choices for different settings.

Work: The student is assigned to the project; they will report on Monday. (Singular they is fine in workplace updates.)
School: The students are reading chapters 3 and 4 for homework. (Use plural verbs for groups.)
Casual: Is the student coming to practice? I heard they might be late. (Casual speech accepts singular they.)

Wrong vs right examples you can copy

Six quick pairs that fix common agreement and pronoun errors.

Wrong: The student are ready for the exam.
Right: The student is ready for the exam.
Wrong: The students is shipping the package tomorrow.
Right: The students are shipping the package tomorrow.
Wrong: The student left their books in the lab and needs them.
Right: The student left their books in the lab and needs them. (Acceptable: singular they)
Wrong: Everyone must turn in his or her homework; students are late.
Right: Everyone must turn in their homework; students are late. (Singular they simplifies repeated phrasing.)
Wrong: The team is arguing they want a refund.
Right: The team is arguing that it wants a refund. (Collective noun + singular agreement) OR
Right: The team members are arguing; they want a refund.
Wrong: The student is excited, but they are unclear about the schedule.
Right: The student is excited, but they are unclear about the schedule. (Acceptable: singular they for clarity)

How to fix your own sentence (quick rewrite help)

Fixing agreement is usually three steps: identify, align, simplify.

Identify the true subject (who or what is performing the action).
Align verb number to that subject (is/are, has/have).
Choose pronouns that match number and tone (he/she, his/her, singular they, they/their).

Three copyable rewrites:

Original: This plan are feasible if everyone helps.
Rewrite: This plan is feasible if everyone helps.
Original: The assignment feel difficult for each student.
Rewrite: The assignment feels difficult for each student.
Original: Is that the student are late today?
Rewrite: Is that student late today? or Are the students late today?

A simple memory trick

Picture the subject and verb as a pair. If you hear the verb clearly as singular (is, has), the subject belongs to one person or thing. If you hear plural (are, have), the subject names multiple people or things.

Read the sentence aloud, pausing between subject and verb: does it sound singular or plural?
When choosing pronouns, replace the noun with a clear pronoun in your head: "the student" → "he/she/they"; "the students" → "they."
Search and fix: run a quick find for common mismatches like "student are" or "students is" and correct them in bulk.

Similar mistakes to watch for

Fix one agreement problem and scan for the rest. Related slip-ups often appear nearby.

Subject confusion with prepositional phrases: The list of items is large. (Subject = list)
Collective nouns that take singular or plural verbs depending on meaning: The committee is meeting vs The committee are divided.
Indefinite pronouns: Everyone is invited (singular). Many are attending (plural).
Hyphen and spacing errors that hide the subject or change word class.

FAQ

Should I write "The student is editing their paper" or "his or her paper"?

Both are acceptable. Use "his or her" in very formal contexts if your style guide requires it. Singular they ("their") is clear, inclusive, and widely accepted in neutral and casual contexts.

When do I use "The students are" instead of "The student is"?

Use "The students are" when you mean more than one person. If the subject refers to multiple people, pluralize both the noun and the verb.

Can I mix "The student is" with "they" in the next clause?

Yes. Example: "The student is late; they will join us shortly." The verb "is" agrees with the singular subject; "they" functions as a singular, gender-neutral pronoun in the following clause.

How do I fix many "The student are" mistakes quickly?

Decide whether you mean one student or many. Replace "are" with "is" for one, or change the subject to "students" if you meant multiple. Use find-and-replace for consistent errors, but confirm meaning manually.

Will rewriting remove awkward pronoun choices?

Yes. Rewrites like "Students must submit their forms" or "A student who misses the exam should contact the instructor" remove awkward phrasing and improve clarity.

Want quick confidence on a sentence?

Run the three-step checklist: identify the subject, align the verb, choose the pronoun. If unsure, try the plural rewrite (students...) - it's often the fastest, safest fix.