Diphthong /ei/ (Nguyên âm đôi /ei/) .Unit 13 Diphthong /e / Nguyên âm đôi /e / Introduction /e / is a long vowel sound. It starts with /e/ and moves to / /. It’s pronounced /e / ./e / H /e t / Eight /e t/ Rain /re n/ Plane/ple n/ Wait /we t/ Later / le tər/ Tasty / te sti/ Danger / de nd ər/ Explain / k sple n/ Exchange / ks t e nd /.