English Grammar Lab

← C2

Sophisticated complementation patterns

You will be able to Select gerund, infinitive, subjunctive and finite-clause patterns accurately.

Explanation

Complementation depends on the governing expression and on distinctions in time, stance and meaning.

Examples

Detailed course

Understand the grammar point

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Detailed explanation

This lesson focuses on sophisticated complementation patterns. The structure helps learners manage viewpoint and discourse structure, and it should always be interpreted as part of a complete message rather than as an isolated formula. Before selecting a form, identify the subject, time reference, clause relationship, and the information that receives emphasis.

Formation is central. Use that-clauses, wh-clauses, to-infinitives, -ing clauses, small clauses, raising structures, and complex passive reporting forms according to the lexical pattern selected by the head verb, adjective, or noun. Build the sentence in stages: identify the grammatical subject, choose the auxiliary or main verb form, and complete the clause in normal English word order. In negatives and questions, check whether the structure supplies its own auxiliary or requires another one.

The pattern can help users calibrate commitment and interpersonal distance, package dense information precisely, and adapt grammar to register and rhetorical purpose. These purposes may overlap, so context decides which interpretation is natural. Time expressions, determiners, linking words, and punctuation often provide evidence for the correct choice.

A useful contrast prevents overgeneralisation. Small changes in complementation can alter meaning, agency, subject choice, and register, and superficially similar verbs may permit different structures. Ask how the nearest alternative would change time, certainty, focus, politeness, or register. A grammatically possible sentence may still communicate the wrong relationship if that contrast is ignored.

The guided examples are complete messages. Notice how the target structure agrees with its subject and how the surrounding vocabulary makes the intended meaning clear. When producing a new example, preserve the relationship between form and meaning while changing the people, place, and lexical details.

A reliable self-check is to paraphrase the sentence in simpler language. If the paraphrase changes the time relationship, degree of certainty, or focus, review the original form. Compare the sentence with the common mistakes and explain why the corrected version is preferable.

In connected speech and writing, the structure also contributes to cohesion. It guides the reader through background information, main events, causes, qualifications, and results. Clause order and connector choice can therefore affect interpretation even when every individual word is correct.

Register matters as well. A complex construction may be appropriate in a report but unnecessarily heavy in conversation, while an informal alternative may be too vague for academic writing. Choose the form because it serves the communicative purpose, not because it merely sounds advanced.

At an advanced level, apparent exceptions often reflect viewpoint and discourse organisation rather than a broken rule. Writers can manipulate ordering, modality, reference, or clause type to signal distance, caution, contrast, and evaluation. The safest analysis starts with the semantic relationship and then checks whether the syntax expresses it without ambiguity.

During editing, identify every pronoun and implied subject, verify the scope of negatives and modifiers, and check that parallel elements have the same grammatical function. If a shorter construction communicates the same nuance more clearly, prefer the clearer option.

Expert control also includes the alternatives deliberately rejected. A shift from active to passive, from finite clause to noun phrase, or from direct assertion to modalised claim redistributes agency and evidential responsibility. Accuracy at this level therefore includes rhetorical judgement and sensitivity to the reader’s processing load. Expert grammar involves selecting among alternatives that distribute agency, salience, certainty, and processing load differently. The sentence must be evaluated inside its paragraph, not only as an isolated pattern. A simpler paraphrase is a useful diagnostic when a dense construction becomes difficult to interpret. Expert grammar involves selecting among alternatives that distribute agency, salience, certainty, and processing load differently.

How to form it

Use that-clauses, wh-clauses, to-infinitives, -ing clauses, small clauses, raising structures, and complex passive reporting forms according to the lexical pattern selected by the head verb, adjective, or noun.

Use the structure to manage viewpoint and discourse structure.

Use the structure to calibrate commitment and interpersonal distance.

Use the structure to package dense information precisely.

Use the structure to adapt grammar to register and rhetorical purpose.

Small changes in complementation can alter meaning, agency, subject choice, and register, and superficially similar verbs may permit different structures.

Guided examples

The evidence suggests that the original estimate was overly cautious.

Suggest is followed by a that-clause reporting the conclusion.

Several analysts consider the revised framework to be unnecessarily complex.

Consider is followed by an object plus to be, framework to be complex, rather than a that-clause here.

The witnesses were believed to have left before the final exchange.

This passive raising structure moves the witnesses to subject position, followed by to have left.

What remains unclear is whether the discrepancy affected the overall result.

Whether introduces a wh-clause reporting an open question, functioning as the complement of is.

The committee objected to the data being released without further checks.

Object to is followed by a noun plus -ing clause, the data being released.

The new procedure made it possible for regional offices to request independent review.

Made it possible uses it as a placeholder, with the real subject, for regional offices to request, following later.

Common mistakes

Not: The evidence suggests the original estimate to be overly cautious.

Use: The evidence suggests that the original estimate was overly cautious.

Suggest is not followed by an object plus to-infinitive; it takes a that-clause: suggests that the estimate was, not suggests the estimate to be.

Not: Several analysts consider the revised framework is unnecessarily complex.

Use: Several analysts consider the revised framework to be unnecessarily complex.

Consider in this pattern takes an object plus to be: framework to be complex, not a plain that-clause with is.

Not: The witnesses were believed to leave before the final exchange.

Use: The witnesses were believed to have left before the final exchange.

The leaving happened before the believing, so the perfect infinitive to have left is needed, not the simple to leave.

Not: What remains unclear is if the discrepancy affected the overall result.

Use: What remains unclear is whether the discrepancy affected the overall result.

In this formal complement position after a wh-cleft, whether is preferred to introduce the reported question, not if.

Before you practise

  • Identify the communicative purpose.
  • Check the subject and required verb or auxiliary.
  • Confirm the time reference and clause order.
  • Compare the sentence with the nearest alternative.
  • Read the complete sentence and verify the meaning.

Reading text

The Riverside Inquiry

About 668 words

A witness, the panel, and document editors worked at a riverside maintenance depot to investigate a changed safety procedure. The case mattered because the panel must protect evidence without assigning blame too early. Across the table were records, witness statements, and procedure notices, and none of them could be treated as a neutral detail. The witness denied knowing that the procedure had changed. The report did more than record a fact; it placed one decision inside a wider chain of responsibility. The panel was anxious to avoid implying blame prematurely. The reviewers compared the public record with private notes, not to dramatise the dispute but to locate the point at which interpretation had begun to drift. The report recommended that all records be preserved. At that stage, precision mattered more than speed, since a careless phrase could make a cautious finding sound like an accusation. Editors questioned whether the report allowed any other interpretation. The discussion returned several times to audience, timing, and the burden carried by apparently small wording choices. One draft made the problem look technical; another made it look political; the final version had to acknowledge both without confusing them. By the close of the review, the result was clear: the report preserves the records and leaves room for later findings. A witness, the panel, and document editors return to records, witness statements, and procedure notices because each item helps with the task. The notes show why the panel must protect evidence without assigning blame too early. The group checks the time, the place, and the next decision before moving on. No one rushes, because a small error would change the outcome. The work stays connected to a riverside maintenance depot, where the problem first became visible. By the end, the result is clear: the report preserves the records and leaves room for later findings. Later, the written record helps the group explain the decision without adding new claims. The strongest clue comes from the materials, not from anyone's memory alone. Several details point in different directions, so the group keeps the conclusion careful. The final record can be checked again if the question returns. A witness, the panel, and document editors return to records, witness statements, and procedure notices because each item helps with the task. The notes show why the panel must protect evidence without assigning blame too early. The group checks the time, the place, and the next decision before moving on. No one rushes, because a small error would change the outcome. The work stays connected to a riverside maintenance depot, where the problem first became visible. By the end, the result is clear: the report preserves the records and leaves room for later findings. Later, the written record helps the group explain the decision without adding new claims. The strongest clue comes from the materials, not from anyone's memory alone. Several details point in different directions, so the group keeps the conclusion careful. The final record can be checked again if the question returns. A witness, the panel, and document editors return to records, witness statements, and procedure notices because each item helps with the task. The notes show why the panel must protect evidence without assigning blame too early. The group checks the time, the place, and the next decision before moving on. No one rushes, because a small error would change the outcome. The work stays connected to a riverside maintenance depot, where the problem first became visible. By the end, the result is clear: the report preserves the records and leaves room for later findings. Later, the written record helps the group explain the decision without adding new claims. The strongest clue comes from the materials, not from anyone's memory alone. Several details point in different directions, so the group keeps the conclusion careful. The final record can be checked again if the question returns. A witness, the panel, and document editors return to records, witness statements, and procedure notices because each item helps with the task.

Reading comprehension

  1. Who is involved in the reading?

    Show answer

    a witness, the panel, and document editors

  2. Where does the reading take place?

    Show answer

    a riverside maintenance depot

  3. What task are the people trying to complete?

    Show answer

    investigate a changed safety procedure

  4. What problem makes the task less simple?

    Show answer

    the panel must protect evidence without assigning blame too early

  5. How does the reading end?

    Show answer

    the report preserves the records and leaves room for later findings

Grammar in the text

  1. The witness denied knowing that the procedure had changed.

    Deny is followed by an -ing form, knowing, reporting an earlier state of awareness.

  2. The panel was anxious to avoid implying blame prematurely.

    Anxious is followed by a to-infinitive, to avoid, typical of adjective complementation.

  3. The report recommended that all records be preserved.

    Recommend that is followed by the subjunctive be, without do, does, or did.

  4. Editors questioned whether the report allowed any other interpretation.

    Whether introduces a wh-clause reporting an open question after questioned.

Key point

Use this pattern when the meaning needs it in the reading: verb/adjective/noun + -ing, to-infinitive, that-clause, or whether-clause. In short, complementation links verbs, adjectives, and nouns to the clauses or phrases they require. Example: "The witness denied knowing that the procedure had changed."

Practice

  1. Complete the sentence from the same situation: "The witness denied knowing that the procedure ____."

    Show answer

    The witness denied knowing that the procedure had changed.

  2. Complete the sentence from the same situation: "The panel ____ anxious to avoid implying blame prematurely."

    Show answer

    The panel was anxious to avoid implying blame prematurely.

  3. Complete the sentence from the same situation: "The report recommended ____ all records be preserved."

    Show answer

    The report recommended that all records be preserved.

  4. Complete the sentence from the same situation: "Editors questioned whether the report allowed ____ other interpretation."

    Show answer

    Editors questioned whether the report allowed any other interpretation.

Listening practice

Watch a TEDx talk

“TED's secret to great public speaking” — Chris Anderson (TED). Listen for clear, natural English and pick up new vocabulary while you review this grammar point.

Check your understanding

According to Chris Anderson, what is the one underlying thing that all great talks have in common?

Check your understanding

What does Anderson warn speakers against doing on the TED stage?

Practice

Choose the correct answer. I would rather you ___ the issue before the decision was announced.

Practice

Choose the correct answer. The proposal merits ___.

Practice

Choose the correct answer. There is little point ___ the same argument again.

Written practice

Produce the answer yourself. Capitalisation and final punctuation do not affect validation, but the grammar and word order must be correct.

Sentence correction

Written practice

Correct the sentence.

The proposal merits to be reconsidered.