Phrase and Clause
1. What They Are (building blocks of sentence)
| Unit | Definition | Has Subject + Verb? | Can Stand Alone? | Example |
|---|---|---|---|---|
| Phrase | Group of words that acts as one part of speech (noun/adj/adv) but lacks subject+verb | No | No (fragment) | in the lab (prepositional phrase), the efficient sensor (noun phrase) |
| Clause | Group of words with subject + verb | Yes | Depends on type | the sensor works (has sensor subject + works verb) |
2. Types of Clause
- Independent (main) clause: complete thought, can stand alone as sentence: "The sensor works."
- Dependent (subordinate) clause: incomplete, needs main clause: "When the sensor works" (adverb clause), "that the sensor works" (noun clause), "which works efficiently" (adjective/relative clause).
Sentence types:
- Simple: one independent clause: "The sensor works."
- Compound: two independents joined by for, and, nor, but, or, yet, so (FANBOYS): "The sensor works, and it transmits."
- Complex: one independent + one dependent: "When the sensor works, it transmits."
- Compound-complex: two independents + one dependent.
3. Why It Matters
- Punctuation: comma before coordinating conjunction in compound sentence.
- Conciseness: phrase vs clause choice affects formality: "The sensor in the lab (phrase) failed" vs "The sensor that is in the lab (clause) failed" — first concise.
- Technical writing prefers simple and complex over long compound-complex.
4. Worked Identification
"In the lab" → phrase (no verb)
"The sensor that was calibrated" → clause? "that was calibrated" is dependent adjective clause (has subject that + verb was), modifies sensor.
"When the system fails, the alarm sounds." → "When the system fails" = dependent adverb clause, "the alarm sounds" = independent.
5. Exam Points
- Define phrase vs clause with table — 5 marks, very frequent (almost certain to ask difference).
- Identify phrase vs clause in given groups — 5 marks, frequent.
- Distinguish independent vs dependent clause — 3-5 marks, frequent.
- Give example of simple/compound/complex sentence — 5 marks, frequent.