TOEIC Link Writing — Ellipsis and Substitution for Cohesion and Concision

Ellipsis and substitution are the two cohesion devices that let a writer avoid repeating a word the reader is already holding. Ellipsis leaves the word out entirely — she reviewed the first draft and [ ] approved the second; substitution replaces it with a lighter stand-in — the first draft was rejected, and the second one too. Both do the same job: they keep the reader's attention on the new information by not re-stating the old, and a TOEIC Link Writing response that uses them well reads as economical and controlled, while one that repeats every noun and verb reads as heavy and unsure. But both also carry a risk — omit too much and the sentence becomes a fragment; substitute with an ambiguous stand-in and the reader loses the thread — so the devices reward writers who deploy them precisely and punish those who reach for them mechanically.

This article covers what ellipsis and substitution each do, when omission reads as economy versus when it reads as a broken sentence, the substitution words candidates most often misuse, and a four-week routine to deploy both without sacrificing clarity.

What each device does

Ellipsis is the omission of a word or phrase that the reader can recover from what came before. In the report was late and the summary [was] incomplete, the second was is left out because the structure makes it unambiguous; the reader supplies it automatically. Verb-phrase ellipsis is the most common form in business prose — we could have escalated the issue, but chose not to [escalate the issue] — where everything after the stranded to is omitted because it merely repeats the earlier clause. The omission works only when the recoverable material is genuinely identical and structurally parallel to what precedes it; when it is not, the reader stalls trying to reconstruct a phrase that does not quite fit.

Substitution replaces the repeated element with a pro-form rather than deleting it. The noun substitute one / ones stands in for a countable noun — the current process is slow; a leaner one would help. The verbal substitute do / do so / do it stands in for a whole verb phrase — the team met the deadline, and the vendors did too. The clausal substitute so / not stands in for an entire clause after verbs like think, hope, expect — will the budget hold? I think so / I hope not. Substitution is the middle option between full repetition and full omission: it keeps a visible placeholder, which is safer than ellipsis when the omitted material would be hard for the reader to recover unaided.

When omission reads as economy and when it reads as a fragment

The line between elegant ellipsis and a broken sentence is whether the omitted material is recoverable from parallel structure. The proposal was approved by the board and [was] funded within the week is clean, because the shared subject and auxiliary make the omission unambiguous. The proposal was approved and the funding [ ] within the week is broken, because there is no earlier verb the reader can carry into the second clause — the ellipsis has removed something that was not actually repeated. The test is mechanical: an omitted word must have an identical, structurally matched twin earlier in the sentence that the reader can copy into the gap. When it does, the sentence is economical; when it does not, the sentence is a fragment wearing the costume of concision.

The second failure mode is over-omission across non-parallel clauses. Candidates who have learned that concision scores well sometimes strip words from clauses that are not parallel enough to support it — the manager praised the plan, the team the effort asks the reader to reconstruct praised across a comma with no coordinating conjunction, which reads as terse to the point of strain rather than as controlled. Ellipsis rewards restraint: it works best in tightly parallel coordinate structures and grows risky the moment the two clauses stop mirroring each other, a discipline that connects to the balance covered in parallel structure and coordination balance.

The substitution words candidates most often misuse

The noun substitute one is the most misused, in two directions. First, one substitutes for a countable noun only — a better one works for a better process, but one cannot stand in for an uncountable noun, so we need better information; a clearer one is wrong and must stay clearer information. Second, one needs a modifier to justify itself — the red one, a cheaper one — because a bare one replacing a noun with no new descriptive content just adds a word without adding meaning. Getting the countability right here overlaps with the determiner control examined in quantifier and determiner precision in data summary statements.

The verbal substitute do so is the second trouble spot. Do so replaces a full verb phrase and must match it in a way that stays grammatical — we plan to expand into Asia and hope to do so by Q3 works because do so cleanly replaces expand into Asia. But do so cannot replace a stative verb phrase — she owns three properties and her brother does so too is wrong, because own is not the kind of dynamic action do so substitutes for; the correct form is the auxiliary substitute does too. The clausal so after think / hope is misused when writers force it into a full clause — I think so that the plan will work is wrong; so already stands for the whole clause, so nothing follows it. The rule underneath all three is that a substitute must match the grammatical category of what it replaces — noun for noun, dynamic verb phrase for dynamic verb phrase, clause for clause — and errors come from stretching a substitute across a category it does not fit.

The four-week routine

Week one is recognition. Take model business writing at the target register and mark every ellipsis and substitution, then reconstruct the full form of each — write out the word that was omitted or the phrase the pro-form stands for. Seeing the devices at work in strong prose, and confirming that each recovers cleanly, builds the sense of when omission stays unambiguous.

Week two is verb-phrase ellipsis. Take pairs of coordinate clauses that repeat a verb phrase and reduce the second to the stranded auxiliary or to — we could escalate, but would rather not [escalate]. Then take non-parallel pairs and confirm that the same reduction breaks them, so the parallelism requirement becomes a felt constraint rather than a rule.

Week three is substitution accuracy. Drill one / ones against countable and uncountable nouns, do so against dynamic and stative verb phrases, and clausal so / not after think / hope / expect, correcting seeded category-mismatch errors in each. This isolates the single most common fault — a substitute stretched across the wrong grammatical category.

Week four is integration. Draft full responses under exam timing, then reread and, at every point where a noun or verb repeats, ask whether ellipsis or substitution could carry it — and whether the omission stays recoverable if it does. When the devices appear in the first draft and every gap reconstructs cleanly, the concision has become part of the writing rather than a polish added afterward.

The takeaway

Ellipsis and substitution let a TOEIC Link Writing response stay economical by not re-stating what the reader already holds, but both work only under discipline. Omit a word only when an identical, structurally parallel twin earlier in the sentence lets the reader recover it; substitute only with a pro-form that matches the grammatical category it replaces — one for countable nouns, do so for dynamic verb phrases, so / not for whole clauses. Train recognition first, then verb-phrase ellipsis under the parallelism test, then substitution accuracy against category mismatch, until economical cohesion appears in the drafting pass rather than the editing one.