If you have a rhotic accent, you pronounce the /r/ sound whenever the letter 'r' appears in a word, like in 'learn', 'better' and 'perfect'. North American accents are usually rhotic, and other ...

Words with the letters 'ed' at the end are usually regular past tense verbs like 'started' or adjectives like ‘confused’. The pronunciation of 'ed' can change depending on which sound comes before it ...

Traveling at high altitude can be hazardous. The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton University and ...