These questions place extra words between a subject and its finite verb, then ask for a present-tense form or a complete sentence with standard agreement. The reliable task is to identify the agreement controller before looking at the noun nearest the gap.
Strip the subject back to its controller
First locate the whole subject phrase. Then temporarily bracket any inserted material and read the subject head directly beside the verb. A singular head takes singular agreement; a plural head takes plural agreement. The number of a noun inside the brackets is irrelevant unless the construction belongs to a different rule family, such as a fraction, percentage or other quantifier whose of-phrase influences agreement.
| Words between controller and verb | How to decide |
|---|---|
| as well as, along with, together with, accompanied by, in addition to | Treat the inserted words as additive information. They add participants but do not coordinate a new compound subject; agreement stays with the head before them. |
| an ordinary of-, in- or on-phrase | Find the head noun that the phrase modifies. Do not let the nearer noun inside the prepositional phrase attract the verb. |
| one of the plural nouns who or that | Ask what the relative pronoun refers to. A plural antecedent licenses plural agreement; the whole phrase headed by one can license singular agreement. Context must settle a unique key. |
| the only one of the plural nouns who or that | Only strongly favours the singular phrase headed by one. A clearly stated group attachment can still license plural agreement, so wording and context matter more than a mechanical slogan. |
The relative-clause cases need a second pass. Agreement inside the main clause may already be settled, while who or that begins another clause with its own controller. Trace that pronoun to the people or thing the clause actually describes. If the context deliberately leaves both attachments open, both corresponding agreement forms are defensible standard English; neither form should be dismissed merely because the other reading is more familiar.
Traps built into these questions
- A nearby plural noun pulls a singular head towards a bare present form. That is the attraction behind options such as approve after a singular controller and change after a singular sequence. Bracket the intervening words and restore singular agreement.
- The mirror attraction pulls a plural head towards an -s form because a singular noun appears inside the modifier. Options such as files after a plural controller or remains after plural labels reverse the real head and the embedded noun.
- One is treated as an automatic singular command in a one-of relative clause. When the premise explicitly makes the plural group the antecedent, that shortcut wrongly forces singular agreement; trace who or that to its stated antecedent instead.
- A progressive, perfect, past or non-finite form distracts from a prompt that specifically requests a finite simple-present form. Agreement cannot rescue a form that answers a different tense or construction.
Try it
Which sentence correctly ignores a plural noun inside an ordinary intervening prepositional phrase?
- The stack of folders need a stronger shelf.
- The stack of folders needs a stronger shelf.
- The labels on the parcel is difficult to read.
- The handles on the cabinet requires careful polishing.
Type only the standard simple-present form of explain: The pages in the repair manual ___ the calibration process clearly.
The sentence does not say whether the relative clause describes Rana alone or the scientists as a group. Which completions are standard in Rana is one of the scientists who ___ at night? Select all that apply.
- works
- work
- working
- has work