IELTS Speaking · Part 3 · Ch 18

Part 3 — Cause and Effect

"Owing to," "as a result," "this leads to …"

1. Topic & Why It Matters

Cause-and-effect questions are a core Part 3 pattern because they test whether you can explain why something happens and what consequences it has. The examiner is listening for clear reasoning, not memorised topic sentences or a list of disconnected ideas.

Where marks are commonly dropped:

  • Fluency & Coherence — naming one cause but failing to show how it creates the result.
  • Lexical Resource — repeating because, so, bad effect, and influence.
  • Grammar — misusing linkers such as because of, due to, therefore, and lead to.
  • Pronunciation — rushing long explanation chains, so cause markers and result markers become hard to follow.

2. Knowledge Points

The Part 3 cause-effect structure

MovePurposeExample sentence starter
Direct answerState the main cause or effect firstI think the main reason is pressure from work and study.
Cause 1Give the strongest explanationOne major factor is that people are constantly connected online.
MechanismShow how the cause creates the resultThis means they rarely get a proper mental break.
EffectName the consequence clearlyAs a result, many people feel tired even before the day begins.
ExampleMake the abstract idea concreteFor example, I sometimes check messages late at night and then sleep badly.
Limit or balanceAvoid overgeneralisingThat said, the effect depends on people's habits and support systems.

Cause linkers vs. result linkers

FunctionLanguageGrammar rule
Cause clausebecause / since / asbecause + subject + verb
Cause noun phrasebecause of / due to / owing tobecause of + noun or gerund
Result clauseso / therefore / as a resultlink two complete ideas
Effect verblead to / result in / contribute toverb phrase + noun or gerund
Soft causeone factor is that...use when you do not want to sound too absolute

Explain the chain, not just the label

A weak answer says, "Stress is caused by work." A stronger answer explains the chain: work pressure creates longer hours, longer hours reduce sleep and exercise, and that leads to poor mood and lower productivity. Part 3 rewards this kind of step-by-step reasoning.

3. Vocabulary & Phrase Bank

#ExpressionMeaning / use
01the main reason is that...clear opening for a cause answer
02one major factor is...introduces one important cause
03be driven by...be caused or strongly influenced by
04stem from...come from a deeper cause
05be largely due to...formal cause phrase before a noun
06owing to...formal cause phrase, useful but do not overuse it
07as a resultintroduces a consequence
08this leads to...shows one thing causing another
09result in...formal alternative to lead to
10contribute to...be one of several causes
11have a knock-on effectcreate further effects after the first one
12put pressure on...increase stress or demand
13create a vicious cyclea negative pattern that keeps repeating
14make matters worseintensify an existing problem
15long-term consequenceseffects that appear over time
16short-term benefitsadvantages that happen quickly
17unintended consequenceseffects people did not plan
18be closely linked to...show a strong connection
19the root causethe deepest or original cause
20ease the problemreduce the negative effect

4. Grammar Patterns

Because + subject + verb
"People feel more stressed because they are expected to reply to messages almost instantly."
Use because before a full clause, not before a single noun phrase.
Because of / due to / owing to + noun or gerund
"Many young people feel under pressure due to rising living costs and job competition."
After these phrases, use a noun phrase or gerund, not a complete sentence.
This leads to / results in + noun or gerund
"Constant screen use can lead to poorer sleep and lower concentration."
Use these verbs to connect a cause to a specific consequence.
The more..., the more...
"The more time people spend online, the harder it can be for them to switch off mentally."
A strong comparative structure for showing a cause-effect relationship.
Although + cause, result still happens
"Although social media helps people stay connected, it can also create pressure to compare themselves with others."
Adds balance and prevents the answer from sounding one-sided.

5. Pronunciation Focus

Chunking cause-effect chains

Cause-and-effect answers often contain long sentences. Break them into meaning chunks so the examiner can follow the logic. Pause lightly after the cause, then stress the result marker.

PhraseStress targetDelivery tip
One major factor is that...MAjor FACtorUse this as a clear signpost before the cause.
As a result...reSULTPause before it, then use a falling tone to introduce the effect.
This leads to...LEADS toDo not swallow the final /s/ in leads.
It creates a vicious cycle...VIcious CYcleStress the idiom as one chunk, not word by word.

Linking sounds in result phrases

Link final consonants into vowels: as_a result,lead_to, result_in, and because_of. Keep the chunks smooth, but make the main logic words clear.

6. Common Pitfalls

✗  Because the high price, people cannot buy houses.
✓  Because of the high price, many people cannot afford to buy houses.
Use 'because of' before a noun phrase. Use 'because' before a subject and verb.
✗  It will lead people feel stressful.
✓  It can lead to people feeling stressed.
'Lead to' is followed by a noun phrase or gerund, not a bare verb.
✗  The effect is very bad for society.
✓  The long-term effect is that it may reduce trust between different groups.
Avoid vague evaluation. Name the specific effect and who is affected.
✗  Due to people work too much, they are tired.
✓  People are tired because they work too much. / People are tired due to long working hours.
'Due to' needs a noun phrase. If you want a full clause, use 'because'.
✗  This problem happens by technology.
✓  This problem is partly caused by overuse of technology.
Use 'be caused by' for passive cause. Use 'partly' to avoid overclaiming.

7. Practice Question

Part 3 — Discussion

What are the main causes of stress among young people today?

Follow-up: "What effects can this stress have on their daily lives?"

Target length: 45–60 seconds · Aim for two causes + one effect chain + one balanced comment

8. Model Answer (Band 7.5+)

"Well, I'd say there are a few reasons, but the main one is probably pressure to keep up with several things at once: study, future career plans, money, and social life. Because young people are constantly comparing themselves with others online, it can feel as if everyone else is moving faster. That puts a lot of pressure on them, even when their own life is actually going reasonably well.

Another factor is uncertainty, especially around jobs and housing. If someone feels they are working hard but still cannot see a clear path forward, that can create a vicious cycle: they worry more, sleep less, and then find it harder to concentrate the next day. I've noticed this with a friend of mine before exams. He kept checking other people's progress online, and as a result, he became less confident rather than more prepared. So, to be honest, I think stress is not caused by one single thing. It is often the knock-on effect of small pressures building up over time."

9. Annotated Commentary

Complex grammar

"If someone feels they are working hard but still cannot see a clear path forward, that can create a vicious cycle" uses a conditional cause-effect structure.

Idiom used naturally

"a vicious cycle" and "the knock-on effect" fit cause-effect reasoning because both describe consequences that continue beyond the first problem.

Personal anecdote element

The friend-before-exams example turns the abstract topic of stress into a specific, believable observation.

Natural fillers

"Well", "probably", "especially", "so", and "to be honest" make the reasoning sound spoken and flexible.

Pronunciation notes

Pause after cause phrases like "Because young people are constantly comparing themselves..." and stress result phrases like "as a result" and "knock-on effect".

10. Self-Drill

Shadow-reading line — say this 5 times aloud

"Because young people are constantly comparing themselves with others online, it can create a vicious cycle."

Focus on: pause after the because-clause, stress constantly comparing, and chunk vicious cycle.

Improv prompt — record yourself, no notes

"What causes people to spend too much time on their phones, and what effects can this have?"

Target: 45+ seconds · Use because of, as a result, and one phrase from the cause-effect vocabulary bank.

Practice NotesCause and Effect — practice notes