1The word 'boil' contains a diphthong, which is pronounced as a combination of the 'oi' sounds.
2Is the 'ou' in 'loud' a diphthong or a single vowel sound?
3The diphthong in 'price' is pronounced differently in American and British English.
4When pronouncing the word 'buy', make sure to pronounce the diphthong 'uy' correctly.
5In phonetics, diphthongs are classified into different types based on the combination of vowel sounds.