Main clause
The hikers rested.
Subject + predicate + complete thought.
Complex sentences = main clause + dependent clause
Teach students to find clause structure first, then use clause relationships and order for effect.
Learning intention
We are learning to identify, build and explain complex sentences.
- I can find the main and dependent clauses.
- I can tell a phrase from a clause.
- I can distinguish simple, compound and complex sentences.
- I can choose a subordinator for time, cause, condition or contrast.
- I can explain how clause order changes emphasis.
Board 1: stand-alone test
Dependent clause
because the track was flooded
Subject + predicate, but the subordinator leaves the thought incomplete.
Phrase
under the old bridge
No complete subject–predicate relationship.
Board 2: sentence type
- Simple: The dog barked.
- Compound: The dog barked, and the baby woke.
- Complex: When the dog barked, the baby woke.
Ask students to prove each classification by marking clause boundaries.
Board 3: subordinator meaning
Time
when, while, after, until
Reason
because, since
Condition
if, unless
Contrast
although, though
Change because to although in the same sentence and discuss how the logical relationship changes.
Board 4: long does not mean complex
The enormous, brightly painted bus with six windows stopped outside the library.
Long? Yes. Complex? No. There is one independent clause and no dependent clause.
Board 5: clause order and effect
Cause first
Because the road was flooded, the bus turned back.
Result first
The bus turned back because the road was flooded.
Same relationship; different starting emphasis. Ask: what does the reader learn first?
Quick checks
- Dependent clause: “Until the tide went out…” Dependent.
- Sentence type: “We waited, but the gate stayed closed.” Compound.
- Sentence type: “Unless the gate opens, we will use another entrance.” Complex.
- What does although show? Contrast/concession.
- What punctuation follows an opening dependent clause? Usually a comma before the main clause.
Misconceptions to correct
- “It is long, so it is complex.”
- “Any word group is a clause.”
- “The first clause must be independent.”
- “Compound and complex mean the same thing.”
- “Subordinators can be swapped without changing meaning.”
Exit ticket
Combine: The water was cold. The swimmers continued.
- Write a complex sentence showing contrast.
- Underline the dependent clause.
- Explain what the opening clause makes the reader expect.