Grade by Grade
B. Foundations of Language · Foundations: Grammar, Sentences and Punctuation

Sentence Variety and Emphasis: Openings, Length and Order

B3.1 B3.3About 40 minutes
Learning goals
  • I can begin sentences in different ways (with a phrase, a clause or a single word).
  • I can mix long and short sentences on purpose.
  • I can write cumulative and periodic sentences and explain the effect of each.
  • I can use the end of a sentence to place emphasis.

Words to know

sentence opener
The first words of a sentence. It can be the subject, a phrase, a dependent clause or a single word.
cumulative sentence
A sentence that states the main clause first and then adds details after it: We ran for the bus, backpacks bouncing, boots slipping on the ice.
periodic sentence
A sentence that holds the main clause until the end to build suspense: After three days of rain, two flat tires and one very lost map, we finally reached the campsite.
end focus
The idea that readers notice what comes last in a sentence most strongly.
sentence fluency
How smoothly writing reads aloud, thanks to varied sentence lengths, openings and forms.

Listen to the rhythm

Read Paragraph A aloud.

The storm came in fast. The wind was very strong. The power went out. We found the flashlights. We sat in the kitchen.

Now read Paragraph B.

By late afternoon, the storm had rolled in over the lake, darker than any storm we had seen all summer. The power died. Feeling our way along the wall, we found the flashlights in the drawer by the back door. We sat in the kitchen and listened to the wind hammer the windows, wondering whether the old maple in the yard would make it through the night. It did.

Paragraph A has five short sentences that all start with the subject. It sounds like a robot. Paragraph B varies openings, lengths and order. Notice the short sentences: The power died. and It did. They hit hard because they come after long ones.

Dark storm clouds rolling over a lake with whitecapped waves crashing on a rocky shore beside a small cottage and windblown pines.
A storm rolling in over a lake, like the one in the two paragraphs. Paragraph B's varied sentences help readers feel this kind of scene building, then breaking. AI-generated image
5544520317272Paragraph AParagraph B
Number of words in each sentence. Paragraph A's sentences are all about the same length. Paragraph B mixes long and short sentences.

Three tools for variety

1. Vary your openers. Not every sentence has to start with The or I.

Opener typeExample
Subject (the usual way)The geese flew south in long lines.
Prepositional phraseIn long, wavering lines, the geese flew south.
Participial phraseHonking loudly, the geese flew south.
Adverb clauseAs the first frost settled on the fields, the geese flew south.
Single adverbSuddenly, the geese rose from the pond.
Infinitive phraseTo reach their wintering grounds, the geese fly thousands of kilometres.
Six ways to open a sentence. Most openers are followed by a comma; very short prepositional phrases sometimes are not.

2. Vary your lengths. Long sentences carry detail and connect ideas. Short sentences create emphasis, surprise or tension. A good paragraph usually has both.

3. Control the order.

  • A cumulative sentence puts the main clause first and then piles on details. It feels natural and flowing, like a camera moving closer: The dog burst through the door, tail wagging, paws muddy, a stick clamped in its teeth.
  • A periodic sentence holds the main clause until the end. It builds suspense: After weeks of practice, two sprained fingers and one broken string, Mei finally played the whole song without a mistake.

End focus

Readers remember what comes last. Put your most important or surprising word at the end. Compare:

  • A bear was standing in the middle of the trail.
  • Standing in the middle of the trail was a bear.

The second sentence uses inverted order (the verb comes before the subject) to save bear for the end. Use this trick sparingly, or it sounds strange.

Cumulative: main clause first, then details pile onMAIN CLAUSEdetaildetaildetailThe dog burst through the door, tail wagging, paws muddy,a stick clamped in its teeth.Periodic: details first, main clause saved for the enddetaildetaildetailMAIN CLAUSEAfter weeks of practice, two sprained fingers and one broken string,Mei finally played the whole song without a mistake.
A cumulative sentence gets the main clause out of the way and then adds details. A periodic sentence makes the reader wait for the main clause, which builds suspense.
Worked example

Let's revise a paragraph for variety

Revise: I went to the farmers' market. I bought apples. The apples were from a farm in Norfolk County. I also bought maple syrup. I walked home.

  1. Notice the problem: five short sentences, four of them starting with I.
  2. Combine the apple ideas with a participial phrase: I bought apples grown on a farm in Norfolk County.
  3. Start one sentence with a prepositional phrase: At the farmers' market.
  4. Keep one short sentence for a clear ending, or end with a detail you want readers to notice.

At the farmers' market, I bought apples grown on a farm in Norfolk County. Then, unable to resist, I added a jar of maple syrup to my bag before I walked home. The new version has varied openers, a participial phrase and a natural flow.

Worked example

Let's turn a cumulative sentence into a periodic one

Rewrite as a periodic sentence: Jaden scored the winning goal, with only four seconds left, after missing two shots.

  1. Find the main clause: Jaden scored the winning goal.
  2. Move the details to the front, in a logical order: After missing two shots, then with only four seconds left.
  3. Put the main clause last for suspense. Add commas after the opening phrases.

After missing two shots, with only four seconds left, Jaden scored the winning goal. Now the reader waits until the end to find out what happened.

Fragments on purpose?

Professional writers sometimes use a fragment for effect, such as Silence. or Not again. This works in stories and personal writing when it is clearly deliberate. In reports, essays and formal letters, use complete sentences.

Just for fun

Paragraph A walked in. Paragraph A sat down. Then, scarf flapping and openers varied, Paragraph B swept through the door and stole the whole show.

Hands-on activity

Sentence-length graph

You need: a novel or magazine from home, one page of your own writing, graph paper (or lined paper) and two pencil crayons.

  1. Pick one paragraph from the novel. Count the words in each sentence. Draw a bar for each sentence, one colour for the novel.
  2. Do the same for one paragraph of your own writing in the other colour.
  3. Compare the graphs. Is one flat like Paragraph A, or does it go up and down like Paragraph B?
  4. Also list the first two words of each of your sentences. How many start the same way?
  5. Revise your paragraph: change at least two openers and combine or split at least one sentence. Graph it again.

What to look for: the revised graph shows more variety, and your child can explain one change (for example, "I made this sentence short so it would stand out").

Your turn

1

Rewrite with a prepositional phrase opener: The canoe glided across the lake at sunrise.

2

Rewrite with a participial phrase opener: Mira laughed and dropped the plate.

3

Rewrite with an adverb clause opener: We went inside because the mosquitoes were biting.

4

Cumulative or periodic? The puppy slept by the fire, paws twitching, dreaming of squirrels.

5

Cumulative or periodic? Through the blizzard, past the frozen creek and up the long hill, the rescuers finally reached the cabin.

6

Rewrite using end focus so that a moose comes last: A moose stood beside the highway.

7

Why might a writer put It did. right after a long sentence?

More practice: warm-up

1

Add a single-adverb opener to: The lights went out.

2

What punctuation usually follows an opening participial phrase?

3

What is a cumulative sentence?

4

What is a periodic sentence?

5

Which creates more emphasis after several long sentences: a long sentence or a short one?

More practice: on your own

1

Combine into one sentence with a participial opener: The goalie dove to the left. She stopped the puck.

2

Rewrite as a periodic sentence: We finally saw the northern lights after waiting outside for two hours in the cold.

3

Rewrite as a cumulative sentence by adding two details after the main clause: The bus pulled away.

4

Revise for variety (change at least two openers): We went to Ottawa. We saw Parliament. We ate lunch by the canal. We went home.

5

Find the opener type: To finish the mural before Friday, the art club stayed after school.

Challenge

1

Write a three-sentence paragraph about a winter morning: one long cumulative sentence, one short sentence for emphasis and one periodic sentence.

2

Explain why this inverted sentence works in a story but might be wrong in a lab report: Into the beaker went the vinegar.

3

Rewrite this paragraph so the most important idea gets end focus: The fire alarm went off during the math test, which was the hardest test of the year.

Check your understanding

Quiz

1.

Which sentence opens with a participial phrase?

2.

Which is a periodic sentence?

3.

What is the main reason to mix short and long sentences?

4.

In Beside the old shed sat a fox, which word gets end focus?

5.

Which sentence is cumulative?

6.

Which opener type is To save money, in To save money, we packed lunches?

For parents and teachers

What this lesson is about: sentence fluency. Grade 8 students know the sentence forms; now they use openers, length and word order deliberately for effect.

How to help at home:

  • Have your child read their writing aloud to you. Listening reveals choppy or monotonous rhythm faster than reading silently.
  • Point out short punchy sentences in books you read together and talk about why the author placed them there.
  • The sentence-length graph is a quick, visual way to check a draft.

Common difficulties:

  • Over-correcting: every sentence now starts with a participial phrase. Variety means a mix, including plain subject-first sentences.
  • Dangling openers: Walking to school, the snow fell. (The snow wasn't walking.) The opener must describe the subject right after the comma.
  • Long sentences that become run-ons. Long is fine if the clauses are joined correctly.