Think Isn't Tink: Dutch's Missing TH Sound

Say 'think' and 'tink' back to back. If they sound the same, you're likely swapping in t for English θ, since Dutch has nothing like this sound in its inventory. To make θ, rest your tongue tip lightly between your top and bottom teeth and let air hiss through continuously, rather than stopping the air completely the way t does. Try this: place your tongue visibly between your teeth in a mirror, blow air steadily for two seconds, then release into 'think'. Practice 'think', 'thanks', and 'both', keeping that tongue position each time instead of pulling back to make a quick stop. Spend two minutes just holding the position and hissing before attaching full words. It will feel unfamiliar at first since Dutch never asks your tongue to sit there — but with a little repetition, it becomes automatic.