Find the recording at https://pronunciationstudio.com/pronunciation-guide-diphthong-vowel-sounds/
As an English learner myself, I can attest that accents can have an effect on how native speakers respond to us. Some accents also interfere with comprehension. Therefore, I would always advocate for teaching pronunciation to language learners. Read more about how to do this at http://exclusive.multibriefs.com/content/how-important-is-pronunciation-instruction-for-english-learners/education
What is the best way to teach pronunciation to your students? In this animated and practical seminar, Adrian Underhill demonstrates the proprioceptive approach and how it can help your classes.
I saw this speaker life at a conference and he is amazing. Please check out his work and videos!
Downloadable Presentation: Sequencing and technology-aided activities in the acquisition of foreign sounds27/10/2017
Find it at http://ollren.org/ld.php?content_id=36389579