English Refresher

C2 · Proficiency

Nominal Clauses

Whole clauses that behave like nouns — sitting in subject, object, and complement positions so you can package a complete idea and slot it into a larger one.

Level: C2 Nouns in disguise Play · Practice · Score
The Grammar Transformer

Choose a clause type. A context.

Five clause types, three contexts — 15 hand-built sentences. Watch a whole clause slide into a noun position — subject, object, or complement.

I don’t know where she lives.
Structure:wh-word + subject + verb (statement order, no ‘do’)
The most common C2 slip is ‘where does she live’ inside a statement. Embedded questions drop the auxiliary: ‘where she lives’.

Got the pattern? Jump to the practice →

The rules — with examples

How whole clauses take noun positions, which wh-word to choose, and where the subjunctive is required.

The three noun positions

Subject
clause + verb — or extraposed with it
What matters most is your health.
That she resigned surprised us.
Object
verb + clause
Nobody knew what she had decided.
I realize (that) you’re busy.
Complement
be + clause
The real question is what she will do next.
The problem is that nobody checked.

Heavy subjects get extraposed. “That he lied to everyone repeatedly is shocking” is grammatical but front-loaded. English prefers dummy it: “It is shocking that he lied to everyone repeatedly.” As an object, that is often simply dropped.

The clause-type families

1
Facts — that-clauses
It’s a shame that he forgot her birthday.   The fact that he apologized surprised me.
Signals: It + be + adjective  ·  The fact that  ·  verbs of knowing and saying
2
Things & people — nominal relatives
What you said changed my mind.   Whoever leaves last locks up.
Signals: what = the thing that  ·  whoever / whatever / wherever  ·  the only choice after a preposition
3
Questions inside statements — whether / if and embedded wh-
Whether we succeed depends on funding.   I don’t know where she lives.
Rule: statement word order inside the clause — no inversion, no added do / does / did

Direct vs. embedded — side by side

Direct question — inversion + do
Where does she live?
A real question inverts and adds do / does / did.
Embedded question — statement order
I don’t know where she lives.
Inside a nominal clause the auxiliary disappears and the subject comes first — never “I don’t know where does she live”.

Whether vs. if: only whether works as a subject (“Whether we succeed depends…”), after a preposition (“depends on whether…”), before a to-infinitive (“unsure whether to go”), and directly before or not. In plain object position, both work: “I doubt whether / if it will help.”

Frames to steal — learn them as chunks

naming a fact
The fact that…
The fact that he apologized surprised me.
natural subject
It’s clear that…
It’s clear that we need help.
emphasis opener
What matters is…
What matters is your health.
any person
Whoever…
Whoever leaves last locks up.
any thing
Whatever…
I’ll support you whatever you decide.
open outcome
Whether or not…
Whether or not we win, we tried.
polite question
Could you tell me…
Could you tell me what this means?
formal demand
It is essential that… be
It is essential that every form be signed.

The subjunctive in one line: after a demand, the that-clause verb is the base form for every person — “that he resign”, “that it be signed”, negative “that she not attend”. British English often softens it to should + base: “that he should resign”.

Triggers of the mandative subjunctive

Verbs and adjectives of demand, advice and necessity
demandinsistsuggestrecommendproposerequesturgeessentialvitalcrucialimperativeadvisable
Pattern: trigger + that + subject + base form: “The regulations require that every visitor wear a badge.”  With be: “It is imperative that the data be verified.”

Practice & score yourself

Ten questions — five multiple choice, five gap-fill. Instant scoring and a short explanation for every answer.

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The one rule to remember

A nominal clause is a noun in disguise — it can be a subject, an object, or a complement. When you embed a question inside one, strip out the inversion and the do: statement order always wins. And after a demand (insist, require, it is essential), the verb drops to its base form.