Correlative Conjunctions, Diphthongs and Sentence Stress

Correlative conjunctions work in pairs: both...and, either...or, neither...nor, not only...but also, whether...or. Diphthongs are vowel sounds that glide, as in 'boy' /ɔɪ/, 'out' /aʊ/ and 'say' /eɪ/. Sentence stress puts emphasis on important words, usually nouns, verbs and adjectives.