English TH Sounds: Practise Them in Useful Sentences
The letters th can represent two common English sounds, as in think and this. Practise with clear examples, a short task and an explained answer key.
The letters th can represent two common English sounds, as in think and this. If your first language does not use them, the mouth movement may feel unfamiliar. A small, careful exercise can help you notice the contrast without turning every conversation into a pronunciation test.
Before studying the explanation, try to answer the practice task below without looking at its answer key. Keep your first attempt. It gives you something concrete to compare with a later answer and helps you identify which part of this topic needs attention.
Notice the shared mouth position
For these common th sounds, the tongue is near or lightly between the front teeth and air passes through a narrow space. Do not bite hard or force the tongue far out. A mirror can help you check a comfortable position while you imitate a reliable audio model.
The sound in think is usually voiceless; the sound in this is usually voiced. Touching your throat lightly may help you notice vibration in the voiced sound. This is a rough awareness exercise, not a medical test or a requirement to make every sensation identical to someone else’s.
Contrast words you actually use
Practise think, three and thank for the voiceless sound, then this, those and together for the voiced sound. Check recordings because not every spelling with th follows the same pattern; names and words such as thyme have different pronunciations.
If you substitute t, d, s or z, first notice which movement changes. A minimal contrast such as thin and tin can help you hear the difference. Use a few checked examples and keep them short. Racing through a long word list can reinforce the substitute without giving you time to adjust.
Place the sound in an easy phrase
Try “three things”, “thank you” and “this is theirs”. Start slowly enough to make the target movement, then move toward a comfortable speaking pace. The surrounding sounds affect coordination, so a word pronounced well alone may still need practice in a phrase.
Do not hold a sound so long that the sentence becomes unnatural. Your goal is a clear transition into and out of the sound. Record one phrase, listen, and compare with your model. Choose one correction at a time so that attention to pronunciation does not erase the meaning of the sentence.
Keep intelligibility as the goal
Different English accents use different sound patterns. Learning a commonly taught th contrast can help in many contexts, but it is not a measure of intelligence or the only sign of clear speech. Word choice, stress and a manageable pace also support understanding.
Use a short real message after the sound exercise: “I think the third option is useful.” If someone understands the message easily, keep practising without interrupting yourself for every small difference. If a particular word is repeatedly misunderstood, target that word and phrase rather than judging your entire speaking ability.
Try it before reading the answer
Classify the common initial sound in think, this, three and those as voiced or voiceless. Record “I think these three things are useful.” Listen for the contrast and choose only one phrase to repeat. Check any unfamiliar word with dictionary audio before adding it.
Say or write a complete response, rather than naming only a rule. Where the task asks you to explain a choice, connect that explanation to the meaning or situation. If more than one answer could fit, state the interpretation you are using instead of pretending the context settles everything.
Check the answer and the reason
Think and three commonly begin with the voiceless th sound; this and those begin with the voiced sound. In the practice sentence, think, three and things normally use the voiceless sound, while these uses the voiced sound. Evaluate the target contrast and overall clarity, rather than assigning yourself an unsupported accent score.
Compare the model with your first attempt. Choose one useful correction and make a new example with different content. If your original answer was also valid, explain why it fits. The answer key illustrates the requested task; it is not a complete list of every possible English sentence in a different context.
Make this a short practice session
Use the lesson in three passes: understand a checked example, retrieve the language without viewing it, and use it in a new message. Spend more attention on the part that blocked your first attempt. You can practise alone with a recording or with a partner who can ask a relevant follow-up. Keep your notes focused on one observable skill.
Return to the task after a gap and change one detail. Notice whether you can adapt the language while keeping the intended meaning clear. Record specific evidence such as a correct question form, a phrase recalled without help or an uncertainty you still need to check. One exercise can guide the next practice session without establishing a whole language level.
Continue with a related Sunny Academy activity
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