silent /t/ sound

In North American English, the /t/ sound is sometimes silent. It is usually silent if:

1. there is an /n/ sound before the /t/;
2. there is a stressed vowel before the /n/;
3. there is an unstressed vowel after the /t/.

examples:

twenty        winter         printer        internet

Toronto       rented        painted       centre

To listen to the pronunciation of these examples, please go to this video link: