A2B1 For French speakers

I Tink Dat: How French Speakers Finally Nail the English TH

By Philip Simon ·

You hear the word 'think' and your tongue instinctively slams into your teeth to make a /t/. You hear 'this' and you push out a /z/ like the s in 'zebra'. You are not alone. Your French phonology has no /θ/ or /ð/. You are trapped in a binary world of /t/, /d/, /s/, and /z/. This guide stops the guessing. We will map the exact physical position your tongue must take to escape the French trap. You will learn why 'sink' is not 'think' and why 'dis' is not 'this'. The fix is not about trying harder. It is about moving your tongue to a place French never requires.

  1. Identify the French Trap

    French speakers instinctively map English /θ/ to /t/ or /s/ and /ð/ to /d/ or /z/. This happens because French phonotactics lack the interdental fricatives. You must accept that your current habit is a direct result of French grammar rules, not a personal failure. The error is systematic and predictable.

    Write down five words with TH and say them with your current French accent. Listen for the /t/ or /s/ sound.

  2. Locate the Interdental Position

    For the voiceless /θ/ in 'think', place the tip of your tongue between your upper and lower front teeth. Blow air out. You should hear a hiss, not a stop. For the voiced /ð/ in 'this', keep the tongue in the same spot but engage your vocal cords. You should feel a vibration. The French do not use their teeth for speech sounds, so this feels unnatural. Do not pull your tongue back into your mouth. Keep it stuck out like a baby learning to speak.

    Practice with a mirror to see tongue placement.

  3. Master the Voiceless /θ/

    Start with 'think', 'thank', 'three', 'bath'. The air must flow freely over the tongue. If you make a /t/ sound, you are blocking the air. If you make an /s/ sound, your tongue is too flat. It must be a soft hiss. Practice saying 'th-th-th' like a snake, but with your tongue between your teeth. This is the sound of a French person trying to whistle through a keyhole.

    Hold a piece of paper in front of your mouth; feel the steady airflow.

  4. Master the Voiced /ð/

    Now try 'this', 'that', 'these', 'those'. The tongue position is identical to /θ/. The only difference is the vibration. Place your hand on your throat. If you feel nothing, you are making a voiceless /θ/. If you feel a buzz, you are making the correct /ð/. French speakers often drop the vibration and turn 'this' into 'dis'. Force the buzz. It is the only way to distinguish 'thigh' from 'thy'.

    Say 'this' slowly and feel the vocal fold vibration.

  5. Break the French Substitution Habit

    You will hear 'sink' for 'think' and 'zis' for 'this'. This is the French trap in action. You must actively replace these. Use minimal pairs to train your ear. Say 'think' and 'sink' back to back. Say 'this' and 'zis' back to back. Your brain needs to hear the difference between the French /s/ and the English /θ/. Repeat until your tongue remembers the new position without your brain giving the order.

    Record yourself and compare to a native speaker.

Common questions

Why do I keep saying 'tank' instead of 'think' when I am tired?

Fatigue makes your tongue retreat to its default French position. The interdental position requires effort. When you are tired, your brain reverts to the easier /t/ sound. Practice when you are fresh, or consciously force the tongue forward even when exhausted.

Can I just say 's' instead of 'th' and be understood?

You will be understood, but you will sound like a caricature. 'Sink' and 'think' are different words in English. 'Zis' and 'this' are different words. The meaning changes. You must learn the difference to speak correctly, not just be understood.

Why do some French speakers say 'zee' for 'the' but 'dis' for 'this'?

The word 'the' is always followed by a vowel sound, so the voiced /ð/ is easier to approximate as /z/. The word 'this' is followed by a consonant or vowel, but the /ð/ is often lost in fast speech, leading to the French /d/ or /z/. The context changes the substitution, but the root problem is the same: no /θ/ or /ð/ in French.

How do I know when to use /θ/ and when to use /ð/?

Most TH words are voiced /ð/ (this, that, these, those, them, they). Most are voiceless /θ/ (think, bath, path, mouth). There are exceptions like 'that' which is voiced. Use a dictionary to check the pronunciation. If you are unsure, try the voiced /ð/ first. It is more common.

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Sources

  1. Learner English, Cambridge University Press.
  2. French Phonology, Cambridge University Press.

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