introduction part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 1 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 2 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 3 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 4 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 5 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 6 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 7 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 7 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice unit 8 part ⅰ speech sounds part ⅱ clear speech part ⅲ ⅰntonation part ⅳ rhythm practice
以下为对购买帮助不大的评价