简答题Speakers can only link words within a semantic group.简答题Weak forms usually take sentence stress and are emphasized.简答题In the phrase "last year," the final /t/ sound of "last" and the initial /j/ sound of "year" can be assimilated into /ʧ/.简答题Weak forms of the word "and" include /ənd/, /nd/, and /n/.简答题Linking (or liaison) can only happen between a consonant and a vowel.简答题Nasal plosion requires speakers to release air from the nose or from both the nose and the mouth.