I'm not sure that I understand this section:
- "Negatives don't have weak forms - Negative contractions don't have weak forms. For example, "could" has the weak form /kəd/ but "couldn't" only has the form /ˈkʊdənt/. Similary "are" has the weak form /ər/ but "aren't" only has the form /ɑːrnt/ (identical to "aunt" in Received Pronunciation)."
By definition weak forms are unstressed, and negative contractions can be and often are stressed. You can pronounce /aɪ kʊd nɒt ˈgəʊ/, /aɪ kʊd nət ˈgəʊ/, /aɪ kəd ˈnɒt gəʊ/, /aɪ ˈkʊdənt gəʊ/, but you don't pronounce /aɪ kədənt ˈgəʊ/. Ghoti (talk) 16:13, 12 July 2016 (UTC)