重点讲解：
1. up to 直至；直到；
例句：Up to yesterday, I thought he was single.
直到昨天，我一直以为他是独身。
2. hope against hope that 存一线希望；抱着万分之一的希望；
例句：She glanced about the hall, hoping against hope that Richard would be waiting for her.
她眼睛扫过大厅，对理查德会在那里等她仍怀有一丝希望。
3. be at cross-purposes （谈话内容、所做之事等）互不相干，互不理解；
例句：Albert's opinion is always at cross purposes with Jim's.
艾尔伯特的意见总是和吉姆的相反。
4. be through with sth. 完成的；结束的；（与…）关系了结的；
例句：I'm through with the explaining.
我不想再解释了。
5. do not give a damn 毫不在乎；完全不关心；
例句：They do not give a damn about the rumor.
他们对谣言毫不在乎。
6. after all 毕竟；终究；
例句：After all, 15 minutes of exercise is better than nothing.
毕竟，锻炼15分钟比不锻炼好。