These vowels might not be familiar to Spanish speakers because they are in the middle of the mouth.

VowelExample WordIPANotes
/ʌ/cup/kʌp/Stressed, short
/ʌ/luck/lʌk/Stressed, short
/ʌ/sun/sʌn/Stressed, short
/ʌ/bus/bʌs/Stressed, short
/ɜː/bird/bɜːd/Stressed, long
/ɜː/word/wɜːd/Stressed, long
/ɜː/learn/lɜːn/Stressed, long
/ə/banana/bəˈnænə/Unstressed
/ə/support/səˈpɔːrt/Unstressed
/ə/about/əˈbaʊt/Unstressed