What are the diphthongs ?
give three examples for diphtongs.
I s the sound /I:/ as in deer considered a diphtong?
A diphtong is two vowel sounds in one.
For example, the vowel in "sound" is a diphtong, and is represented in the IPA as [au]. It begins like an [a] and ends in an [u].
The vowel sound [ɪ:] in "see" is a single vowel, not a diphtong -- it's just a long vowel. However, in the word "deer", most people pronounce the vowel sound as [ɪǝ] "ee-uh", which is a diphtong.