short怎么读,thin怎么读语音

pep新版四年级上册unit3myfriends a let'slearn课件 he's short and
boy. tom my friend's he's seven. he's short.
他看起来怎么样? --he is tall. tall [t :l] short [ :t]
it has small head! and short tail.
let's chant long, long, long, the pencil is long short ,short