Postmodifying Participle Phrases in Technical English
5 exercises — practise choosing -ing vs -ed participle phrases to modify nouns concisely.
0 / 5 completed
1 / 5
Which sentence correctly uses a postmodifying present participle (-ing) phrase to describe a process actively producing something?
A present participle phrase ("processing the queue") can postmodify a noun to compress a relative clause with an active meaning: "The background job [which processes] the queue" becomes "The background job processing the queue". Option B is correct. Option A is a subject-verb agreement error unrelated to participles ("job process" should be "job processes"), and it lacks a participle phrase. Option C incorrectly uses the past participle "processed", which gives a passive meaning ("the job that is processed by the queue") — the reverse of the intended active meaning. Option D keeps the relative pronoun "that" alongside the bare participle "processing" without an auxiliary, which is ungrammatical — you use either the full relative clause ("that processes") or the reduced participle phrase ("processing"), not a mix of both.
2 / 5
Which sentence correctly uses a postmodifying past participle (-ed) phrase to describe a noun receiving an action?
A past participle phrase ("generated by the build script") postmodifies a noun with a passive meaning: "The configuration file [which is generated] by the build script" reduces to "The configuration file generated by the build script". Option B is correct. Option A incorrectly uses the present participle "generating", which would give an active meaning ("the file that generates something"), the opposite of the intended passive sense. Option C uses the bare base form "generate", which is not a valid participle form at all. Option D keeps the relative pronoun "that" but omits the required auxiliary "is/was" before the past participle — "that generated" reads as a finite past-tense verb without a subject, which is ungrammatical in this position.
3 / 5
Which sentence correctly chooses between -ing and -ed participle phrases based on active vs. passive meaning in a system architecture description?
The load balancer actively distributes requests, so the active present participle "distributing" is correct: "The load balancer distributing incoming requests is deployed across three nodes" = "The load balancer, which distributes incoming requests, is deployed across three nodes." Option B is correct. Option A uses "distributed" as the finite main verb of the sentence (past tense), which changes the sentence structure entirely and removes the intended postmodifying phrase, changing the meaning to something else (and removing "is deployed"). Option C incorrectly uses the passive past participle "distributed by incoming requests", which nonsensically implies the load balancer is being distributed by the requests, reversing the real relationship. Option D uses the correct participle but incorrectly changes "is deployed" to "deployed" without an auxiliary, leaving the sentence without a finite main verb.
4 / 5
Which sentence correctly compresses a defining relative clause into a postmodifying participle phrase for a security report?
The relative clause "that originate from unauthenticated clients" has an active meaning (requests actively originate), so it reduces to the present participle phrase "originating from unauthenticated clients". Option B is correct: "Requests originating from unauthenticated clients are logged and blocked." Option A is grammatically correct but is the full, uncompressed relative clause, not the reduced participle form the question asks for. Option C incorrectly uses the past participle "originated", which is not idiomatic here since "originate" describes an active, ongoing characteristic of the requests rather than something done to them by an external agent. Option D omits both the relative pronoun and any participle form, leaving two finite verbs ("originate... are") without a connector, which is a run-on/comma-splice-style error.
5 / 5
Which sentence correctly uses a postmodifying participle phrase to avoid an ambiguous or dangling structure in a release note?
Option B correctly uses two clearly attached postmodifying participle phrases: "affecting the checkout service" (active, describing what the race condition does) and "discovered during load testing" (passive, describing how it was found), both unambiguously modifying "the race condition", with a clear finite main verb "was fixed and deployed". Option A is ambiguous — "deployed last Tuesday" could attach to "the race condition" or awkwardly float at the end without a clear anchor, creating a dangling-modifier risk. Option C front-loads "Affecting the checkout service" in a way that risks being misread as modifying the wrong noun before the true subject appears. Option D omits the necessary "-ing"/"-ed" form entirely ("race condition affect the checkout service"), producing an ungrammatical run of untransformed verbs with no clear finite structure.