5 exercises — using correlative conjunctions correctly in technical contexts: stacking benefits with not only…but also, expressing choices with either…or, documenting double failures with neither…nor, and adding requirements with as well as.
Coordination patterns — quick reference
both A and B — two things together; compound subject → plural verb: Both Redis and Memcached are viable.
either A or B — choice between two options; verb agrees with B: Either AWS or GCP works.
neither A nor B — both excluded; verb agrees with B: Neither the cache nor the DB was available.
not only A but also B — stacks two benefits; invert if sentence-initial: Not only does it scale, but it also cuts costs.
A as well as B — adds B parenthetically; verb agrees with A only: The API, as well as webhooks, must be versioned.
Parallel structure — elements joined by coordinating conjunctions must be the same grammatical form: both noun + noun or verb + verb.
0 / 5 completed
1 / 5
In a design proposal, an engineer writes: "___ our service handles increased load, ___ it maintains low latency — making it ideal for real-time dashboards." Which coordination pattern correctly expresses cumulative benefit?
Not only… but also is the correct choice for expressing two cumulative advantages, especially in a persuasive design proposal. Importantly, when "not only" opens the sentence, the subject and auxiliary verb must be inverted: "Not only does our service handle…" — compare with: "Our service not only handles… but also maintains…" (no inversion when "not only" is mid-sentence). Breakdown: (A) "Either…or" expresses a choice between two mutually exclusive options — wrong here; (B) ✅ Correct inversion + cumulative meaning; (C) "Both…and" requires parallel noun phrases or verb phrases, not two full clauses with subjects — "Both [clause] and [clause]" is non-standard; (D) "Neither…nor" expresses double negation — the opposite meaning. In architecture proposals and RFCs, not only… but also is the go-to structure to stack benefits: "Not only does GraphQL reduce over-fetching, but it also enables strongly typed contracts."
2 / 5
An incident report states: "___ the primary database ___ the replica were reachable during the outage — all read and write operations failed." Choose the grammatically correct coordination.
The sentence describes a double failure — neither component worked. Neither… nor is the correct structure for double negation. Grammar note: when "neither… nor" joins two singular noun phrases, the verb agrees with the closer subject (proximity rule): "Neither the primary database nor the replica was reachable" — "replica" is singular → "was". Breakdown: (A) "Both…and" means both were reachable → opposite meaning; (B) "Either…or" means at least one was reachable → wrong meaning; (C) ✅ Correct meaning and agreement; (D) "Not only… but also" stacks positives → wrong here. Subject-verb agreement with correlative conjunctions: Both A and B → plural verb; Either A or B / Neither A nor B / Not only A but also B → verb agrees with B (the closer subject). In incident reports, "neither… nor" is essential for documenting multi-component failures precisely.
3 / 5
In an engineering proposal, a developer writes: "We can deploy ___ to AWS ___ to GCP — both offer the SLAs we require." Which coordination is correct and appropriate here?
Either… or expresses a choice between two options where one will be selected. This is exactly the meaning needed: the team has not yet decided — both are viable, one will be chosen. Breakdown: (A) "Both…and" would mean deploying to both clouds simultaneously — a multi-cloud strategy, which is not what the sentence says; (B) ✅ "Either…or" = choose one of two options; (C) "Neither…nor" = both are ruled out — contradicts "both offer the SLAs we require"; (D) "Not only… but also" means deploying to both, stacked as two benefits. Parallel structure rule: what follows either must be grammatically parallel to what follows or. ✅ "either to AWS or to GCP" — both are prepositional phrases. ❌ "either deploy to AWS or GCP" — asymmetric (verb phrase vs. noun). In sprint planning and architecture decisions, "either…or" signals open options; "both…and" signals a decision to do both.
4 / 5
A tech lead writes in a design document: "The new authentication system, ___ our existing OAuth flow, must support multi-factor authentication." Which coordination pattern is correct?
As well as is an additive connector that introduces a secondary element without creating a compound subject. Critically, when "as well as" joins a main subject to a secondary noun, the verb agrees with the main subject alone: "The new authentication system, as well as our existing OAuth flow, must support…" — singular "system" → singular "must". This is different from "and": "The system and the OAuth flow must support…" creates a compound subject requiring a plural verb. Breakdown: (A) "Not only" needs "but also" to complete the pair — it cannot stand alone before a noun phrase; (B) ✅ Correct — parenthetical addition, verb agrees with "system"; (C) "Both" needs "and" to complete the pair; (D) "Either" needs "or". "As well as" is common in technical documentation for additive requirements that don't change the primary subject: "The API, as well as the webhooks, must be versioned."
5 / 5
During a sprint retrospective, a developer writes: "The refactoring ___ improved test coverage ___ reduced the build time by 40% — a clear win." Which coordination correctly expresses both outcomes?
Not only… but also stacks two positive outcomes with emphasis, which is perfect for a retrospective win or achievement summary. When the subject stays the same and "not only" stays mid-sentence (after the subject), there is no inversion: "The refactoring not only improved… but also reduced…". Inversion only happens when "not only" moves to the front of the sentence: "Not only did the refactoring improve coverage, but it also reduced build time." Breakdown: (A) "Either…or" implies only one outcome occurred — wrong; (B) "Neither…nor" denies both — contradicts "a clear win"; (C) ✅ Double achievement, mid-sentence position, no inversion needed; (D) Mixing "both" with "as well as" is redundant and non-standard — use one or the other. In sprint reports, postmortems, and quarterly reviews, not only… but also efficiently communicates compound wins: "Not only did we hit the deadline, but we also shipped with zero regressions."