Quick Read: English spelling uses the letters th for two common sounds: the voiceless sound /θ/ in three, think, bath and the voiced sound /ð/ in the, this, mother. Both are made with the tongue close to or lightly between the front teeth while air passes through. Learners may substitute /t/, /d/, /f/ or other familiar sounds depending on their speech background. The goal is not to erase a Singapore accent; it is to make speech sufficiently clear and flexible for the listener and context.
One-sentence answer: learn the two TH sounds by combining articulation, listening discrimination, minimal-pair practice, words, phrases and spontaneous speech rather than repeatedly telling a child simply to “pronounce properly”.
The original “the, three, tree” problem
The 2016 article noticed a real oral-English difficulty: some students produced three closer to tree, or the with a /d/-like beginning.
The old page treated these mainly as “wrong pronunciation” to be corrected. A stronger approach is to ask:
Which sound is the learner intending, which sound is actually being produced, and what physical movement will create the target contrast clearly enough for the listener?
1. There are two English TH sounds
The spelling th does not correspond to one single sound.
| Sound | Voice | Examples |
|---|---|---|
| /θ/ | voiceless | think, three, thin, bath, healthy |
| /ð/ | voiced | the, this, that, mother, breathe |
The difference is not mainly tongue position; it is whether the vocal folds vibrate.
2. Feel the difference between voiced and voiceless
Place two fingers lightly on the front of your throat.
- Say ssss. You should feel little or no vocal-fold vibration.
- Say zzzz. You should feel vibration.
- Now compare /θ/ and /ð/ using the same idea.
/θ/ is voiceless; /ð/ is voiced.
3. Tongue position
For many speakers, a useful teaching position is:
- place the tongue tip lightly against or just between the upper and lower front teeth;
- do not bite hard;
- allow a narrow stream of air to pass;
- keep the tongue relaxed enough that friction—not a full stop—creates the sound.
The exact degree of tongue protrusion varies naturally among speakers. The important acoustic result is the fricative sound.
4. Why “three” can become “tree”
In /θ/, airflow continues through a narrow opening. In /t/, the tongue creates a complete closure and then releases it.
So if three becomes tree, the learner may be replacing a fricative with a stop.
The teaching target is not “say it harder”. It is:
keep the air flowing instead of fully blocking it.
5. Why “the” can sound like “duh”
/ð/ and /d/ are both voiced, so they already share one feature. The main difference is manner and place of articulation.
- /d/ uses a complete closure around the alveolar ridge behind the teeth;
- /ð/ uses friction with the tongue at or near the teeth.
If the begins with a strong /d/, ask the learner to keep the vocal vibration but let air continue through the tongue–teeth opening.
6. Perception before production
Some learners cannot reliably produce a contrast because they do not yet hear it consistently.
Before repeated speaking drills, test listening:
- three / tree
- thin / tin
- thank / tank
- then / den
- they / day
Say the words in random order and ask the learner to identify which one they heard.
If perception is unstable, slow down and exaggerate the contrast briefly before returning to normal speech.
7. Minimal pairs
A minimal pair differs by one sound and helps the learner feel how a small pronunciation change can alter meaning.
| /θ/ target | Contrast |
|---|---|
| three | tree |
| thin | tin |
| thought | taught |
| thank | tank |
| through | true |
Not every pair is identical across every accent, so use pairs that create a meaningful contrast for the learner’s actual speech.
8. /θ/ versus /f/
Some English varieties and learners may produce /f/ where another speaker uses /θ/.
Compare the articulators:
- /f/: lower lip touches upper teeth;
- /θ/: tongue approaches the teeth.
A mirror can make this difference visible.
9. Word position changes difficulty
A sound may be easy in one position and difficult in another.
- Initial: think, three, this, they
- Medial: healthy, method, mother, weather
- Final: bath, mouth, breathe, smooth
Do not assume success in three means automatic success in bath or mother.
10. “The” has more than one common vowel pronunciation
The article originally linked “the” and “thee”. In natural English, the word the commonly changes its vowel depending on context and emphasis.
- often /ðə/ before a consonant sound: the book;
- often /ði/ before a vowel sound: the apple;
- /ðiː/ can also appear for emphasis: the one.
The exact pattern varies across speakers. The important point for this page is that both begin with the voiced TH sound /ð/.
11. Connected speech is different from isolated words
A student may pronounce three perfectly alone and lose the contrast inside a fast sentence.
Move through four levels:
- sound: /θ/
- word: three
- phrase: three trees
- sentence: The three trees are near the gate.
Then ask the learner to use the words spontaneously in a short conversation or explanation.
12. Slow practice should eventually become normal speech
Over-articulating during early practice is useful because it makes the movement easy to feel. But the final goal is natural timing.
A learner who must pause dramatically before every TH sound has not yet automated it.
13. A five-minute practice routine
- 30 seconds: feel voiced /ð/ versus voiceless /θ/.
- 60 seconds: mirror practice for tongue placement.
- 60 seconds: minimal-pair listening.
- 60 seconds: minimal-pair production.
- 60 seconds: phrases and sentences.
- 30 seconds: spontaneous speech using two target words.
Short, frequent practice is usually more useful than one exhausting pronunciation session.
14. Record, compare, adjust
A phone recording can provide immediate evidence.
- Record three, tree, three, tree.
- Listen without reading the screen.
- Can the learner hear the contrast?
- Record a full sentence.
- Check whether the contrast survives normal speed.
This turns pronunciation into a prediction → attempt → evidence → adjustment loop.
15. Clear speech is not accent erasure
Singapore English has legitimate local pronunciation patterns. Having a Singapore accent is not a language defect.
Pronunciation teaching is most useful when it targets:
- intelligibility;
- important meaning contrasts;
- formal oral-assessment requirements;
- the learner’s ability to shift register when the receiver needs greater clarity.
The target is communicative range, not pretending everyone should sound identical.
16. Current PSLE Oral relevance
For the 2026 PSLE English Language examination, SEAB’s Oral Communication objectives include reading aloud fluently and expressively with clear and accurate pronunciation suited to purpose, audience and context, as well as speaking fluently and clearly during stimulus-based conversation.
That does not mean one isolated accent feature determines an oral score. Pronunciation sits alongside fluency, expression, grammatical accuracy, vocabulary, ideas and engagement with the listener.
SEAB — PSLE Formats Examined in 2026
17. When not to interrupt
If a child is giving a thoughtful oral answer, correcting every TH sound in real time can destroy fluency and confidence.
A better approach can be:
- let the child complete the idea;
- note one recurring pronunciation target;
- practise it separately;
- repeat the sentence naturally.
Correct the speech without losing the thought.
18. Troubleshooting
- Sounds like /t/: reduce complete tongue closure and maintain airflow.
- Sounds like /d/: keep voicing but move articulation toward the teeth and allow friction.
- Sounds like /f/: move the lower lip away from the upper teeth and use the tongue instead.
- Correct alone, wrong in sentences: practise phrases and connected speech.
- Cannot hear the contrast: return to perception exercises before heavy production drilling.
19. The “three trees” progression
The legacy article’s phrase can become a useful structured exercise:
- three
- tree
- three — tree
- three trees
- the three trees
- the three trees are free
- Describe the three trees in your own words.
The last step tests transfer from drill into meaning.
Historical teaching media
The pronunciation video above was embedded in the original 2016 page and is preserved as historical teaching material.
Updated from eduKatePunggol’s March 2016 “The, Three and Tree”. The original pronunciation RFE is preserved, while the page now explains the phonology and articulation of /θ/ and /ð/, perception, minimal pairs, connected speech, oral-assessment relevance and the distinction between intelligibility and accent erasure.
