preview：
1、不惩治他会败坏风纪
it would be sorrupting discipline to leave him unpunished .
2、父母们经常试着培养他们的孩子的音乐品味。
parents often tend to cultivate their children's taste for music .
3、every assistant is expected to be competent and industrious .
每个助手都要求很勤力。
4、我做梦也想不到如此圆满成功。
little did I dream of succeeding so well .
5、他说不出上学缺席的原因。
He could not account for his absence from school .
practice：
1、没有政府的支持，我们的努力将以失败结束。（frustration）
2、政府将会给任何一个愿意耕地的人土地（grant ···to····）
3、在我所有认识的熟人当中，他对我的帮助是最大的。（obliging）
4、he maintained that he had never seen the woman before .
5、一位老师不可以偏爱任何一个学生。（show preference for )
translate these sentences into english or chinese in your own words .
