重点讲解：
1. all together
一起；总计；
eg. You should pay six dollars all together.
你一共该付六美元。
eg. All together plunging the united states into the worst economic slump since the 1930s.
所有这一切都使美国陷入自20世纪30年代以来最严重的经济衰退之中。
2. except for
除了；除…之外；唯有；
eg. The composition was well written except for a few spelling mistakes.
作文写得不错，就是有几处拼写错误。
eg. Except for her illnesses, she had had a particularly happy childhood.
除了体弱多病外，她的童年特别幸福。
3. permit to do sth.
允许；准许；
eg. If they appear to be under 12, then the doorman is not allowed to permit them entry to the film.
如果他们看起来不到12岁，门卫不得允许其进入观看该影片。
eg. Employees are permitted to use the golf course during their free hours.
准许雇员在业余时间使用高尔夫球场。