单元音/e/的拼读练习：
英文原文：
bed bet cell get hell jet let .
net pet rest set vet wet.
pencil pen ten again desk century
英式音标：
[bed] [bet] [sel] [ɡet] [hel] [dʒet] [let] .
[net] [pet] [rest] [set] [vet] [wet] .
[´pensl] [pen] [ten] [ə´ɡen] [desk] [´sentʃəri]
美式音标：
[bed] [bet] [sel] [ɡet] [hel] [dʒet] [let] .
[net] [pet] [rest] [set] [vet] [wet] .
[´pensl] [pen] [ten] [ə´ɡen] [desk] [´sentʃəri]
