fifteen ['fif'ti:n]
(数)十五
among [ə'mʌŋ]
(介)在…当中
seven ['sevən]
(数)七
them [θem]
(代)(they的宾格)他们，它们
boy [bɔi]
(名)男孩
girl [ɡə:l]
(名)女孩
eight [eɪt]
(数)八
monitor ['mɔnitə]
(名)班长
词根记忆：mon（警告）+itor→给你忠告的人或物→班长；监视器
from [frɔm,frəm,frm]
(介)从…来；是…的人
help [help]
(动)帮助
each other ['i:tʃ 'ʌðə]
互相
