Lesson 14
Modifier Placement and Reduced Relative Clauses
This lesson groups five rules that students commonly confuse because they look similar on the surface. Ask who performs the action and what noun the modifier is describing. Work through the examples slowly once; speed comes after the pattern is clear.
What you will learn
- Understand and apply: An opening participial phrase should modify the following noun.
- Understand and apply: Active relative clauses can sometimes reduce to -ing phrases.
- Understand and apply: Passive relative clauses can sometimes reduce to past participles.
- Understand and apply: 'Interested' describes the experiencer; 'interesting' describes the cause.
- Understand and apply: 'Bored' describes the experiencer; 'boring' describes the cause.
For every rule: spot the trigger → identify the grammatical relationship → apply the form → check meaning.
Before you start
Try the warm-up without checking the rule. The purpose is to expose the instinct you currently use, not to score marks.
Which sentence follows the target grammar pattern?
A. Working under time pressure, the student skipped two questions.
B. Working under time pressure, two questions were skipped by the student.
Answer: A. The noun immediately after an introductory participial phrase should be the performer or receiver implied by that phrase.
Rule 1 · G066
An opening participial phrase should modify the following noun
The noun immediately after an introductory participial phrase should be the performer or receiver implied by that phrase.
Correct example
Working under time pressure, the student skipped two questions.
Incorrect example
Working under time pressure, two questions were skipped by the student.
Interpretation
The noun immediately after an introductory participial phrase should be the performer or receiver implied by that phrase. In a test, do not memorise this as an isolated sentence. Ask who performs the action and what noun the modifier is describing. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Modifier errors are common in sentence correction because the sentence can sound polished while saying something illogical.
Common exam trap
A modifier is grammatically neat but attaches to the wrong noun.
How to spot it
Underline the modifier and point to the noun it is meant to describe. If the link is unclear, the sentence is in danger.
3-step solving method
- Underline the modifier.
- Ask who or what it describes.
- Place it next to that noun and check active/passive meaning.
Why the incorrect example fails
The target structure requires this rule: The noun immediately after an introductory participial phrase should be the performer or receiver implied by that phrase. In the incorrect version, the repair is to add “the student skipped”; replace “questions were skipped by the student.” with “questions.”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
A modifier can be grammatically attached yet logically absurd; always test the meaning as well as the form.
The noun immediately after an introductory participial phrase should be the performer or receiver implied by that phrase.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “Working under time pressure, two questions were skipped by the student.”
Reveal quick check answer
Apply An opening participial phrase should modify the following noun: The noun immediately after an introductory participial phrase should be the performer or receiver implied by that phrase.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “Working under time pressure, two questions were skipped by the student.”
Rule 2 · G067
Active relative clauses can sometimes reduce to -ing phrases
A relative clause with an active progressive or active meaning can often be shortened to an -ing participial phrase.
Correct example
Students preparing for CAT need regular reading practice.
Incorrect example
Students prepared for CAT need regular reading practice, if they are currently doing the preparation.
Interpretation
A relative clause with an active progressive or active meaning can often be shortened to an -ing participial phrase. In a test, do not memorise this as an isolated sentence. Ask who performs the action and what noun the modifier is describing. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Modifier errors are common in sentence correction because the sentence can sound polished while saying something illogical.
Common exam trap
A modifier is grammatically neat but attaches to the wrong noun.
How to spot it
Underline the modifier and point to the noun it is meant to describe. If the link is unclear, the sentence is in danger.
3-step solving method
- Underline the modifier.
- Ask who or what it describes.
- Place it next to that noun and check active/passive meaning.
Why the incorrect example fails
The target structure requires this rule: A relative clause with an active progressive or active meaning can often be shortened to an -ing participial phrase. In the incorrect version, the repair is to replace “prepared” with “preparing”; replace “practice, if they are currently doing the preparation.” with “practice.”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
A modifier can be grammatically attached yet logically absurd; always test the meaning as well as the form.
A relative clause with an active progressive or active meaning can often be shortened to an -ing participial phrase.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “Students prepared for CAT need regular reading practice, if they are currently doing the preparation.”
Reveal quick check answer
Apply Active relative clauses can sometimes reduce to -ing phrases: A relative clause with an active progressive or active meaning can often be shortened to an -ing participial phrase.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “Students prepared for CAT need regular reading practice, if they are currently doing the preparation.”
Rule 3 · G068
Passive relative clauses can sometimes reduce to past participles
A passive relative clause can often be reduced to a past-participle phrase.
Correct example
The questions selected for review were unusually difficult.
Incorrect example
The questions selecting for review were unusually difficult.
Interpretation
A passive relative clause can often be reduced to a past-participle phrase. In a test, do not memorise this as an isolated sentence. Ask who performs the action and what noun the modifier is describing. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Modifier errors are common in sentence correction because the sentence can sound polished while saying something illogical.
Common exam trap
A modifier is grammatically neat but attaches to the wrong noun.
How to spot it
Mark the time words and order the events. Choose the tense only after the timeline is clear.
3-step solving method
- Underline the modifier.
- Ask who or what it describes.
- Place it next to that noun and check active/passive meaning.
Why the incorrect example fails
The target structure requires this rule: A passive relative clause can often be reduced to a past-participle phrase. In the incorrect version, the repair is to replace “selecting” with “selected”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
A modifier can be grammatically attached yet logically absurd; always test the meaning as well as the form.
BE + past participle; the receiver becomes the grammatical focus.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “The questions selecting for review were unusually difficult.”
Reveal quick check answer
Apply Passive relative clauses can sometimes reduce to past participles: A passive relative clause can often be reduced to a past-participle phrase.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “The questions selecting for review were unusually difficult.”
Rule 4 · G069
'Interested' describes the experiencer; 'interesting' describes the cause
Use -ed adjectives for the person or thing experiencing a feeling and -ing adjectives for what produces the feeling.
Correct example
I am interested in behavioural economics.
Incorrect example
I am interesting in behavioural economics.
Interpretation
Use -ed adjectives for the person or thing experiencing a feeling and -ing adjectives for what produces the feeling. In a test, do not memorise this as an isolated sentence. Ask who performs the action and what noun the modifier is describing. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Modifier errors are common in sentence correction because the sentence can sound polished while saying something illogical.
Common exam trap
A modifier is grammatically neat but attaches to the wrong noun.
How to spot it
Underline the modifier and point to the noun it is meant to describe. If the link is unclear, the sentence is in danger.
3-step solving method
- Underline the modifier.
- Ask who or what it describes.
- Place it next to that noun and check active/passive meaning.
Why the incorrect example fails
The target structure requires this rule: Use -ed adjectives for the person or thing experiencing a feeling and -ing adjectives for what produces the feeling. In the incorrect version, the repair is to replace “interesting” with “interested”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
A modifier can be grammatically attached yet logically absurd; always test the meaning as well as the form.
Use -ed adjectives for the person or thing experiencing a feeling and -ing adjectives for what produces the feeling.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “I am interesting in behavioural economics.”
Reveal quick check answer
Apply 'Interested' describes the experiencer; 'interesting' describes the cause: Use -ed adjectives for the person or thing experiencing a feeling and -ing adjectives for what produces the feeling.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “I am interesting in behavioural economics.”
Rule 5 · G070
'Bored' describes the experiencer; 'boring' describes the cause
Use bored for the person feeling boredom and boring for what causes it.
Correct example
The lecture was boring, so several students felt bored.
Incorrect example
The lecture was bored, so several students felt boring.
Interpretation
Use bored for the person feeling boredom and boring for what causes it. In a test, do not memorise this as an isolated sentence. Ask who performs the action and what noun the modifier is describing. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Modifier errors are common in sentence correction because the sentence can sound polished while saying something illogical.
Common exam trap
A modifier is grammatically neat but attaches to the wrong noun.
How to spot it
Underline the modifier and point to the noun it is meant to describe. If the link is unclear, the sentence is in danger.
3-step solving method
- Underline the modifier.
- Ask who or what it describes.
- Place it next to that noun and check active/passive meaning.
Why the incorrect example fails
The target structure requires this rule: Use bored for the person feeling boredom and boring for what causes it. In the incorrect version, the repair is to replace “bored,” with “boring,”; replace “boring.” with “bored.”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
A modifier can be grammatically attached yet logically absurd; always test the meaning as well as the form.
Use bored for the person feeling boredom and boring for what causes it.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “The lecture was bored, so several students felt boring.”
Reveal quick check answer
Apply 'Bored' describes the experiencer; 'boring' describes the cause: Use bored for the person feeling boredom and boring for what causes it.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound