Unit 2English around the world.重点单词1.frequent adj.频繁的frequently adv. 2.fluent adj.流利的fluently adv.3.identity n.身份;辨认 4.recognize vt.辨认出 5.official adj.官方的;正式的6.gradual adj.逐渐的gradually adv.重点短语1.play a role (in) 在中起作用 2.because of 因为 e up 走近4.such as 例如 5.at present现在;目前 6.make use of利用7.the number of的数量，数目 8.be based on以为基础/依据.句型转换1.Those who are present today are sure to be praised. Those present today are sure to be prais
