How to Use "diphthong" with Example Sentences

1. Also , all vowel and diphthong sounds in english are voiced .
2. However , in the standard pronunciation of modern english this vowel is not a diphthong ; therefore , its history can be left for the future .
3. The change of a simple vowel to a diphthong , often caused by the influence of neighboring consonants .
4. A diphthong is two vowel sounds pronounced one after the other within the same syllable .