Tom kept quiet about the accident so as not to lose his job.

　　汤姆对事故保持沉默是为了不丢掉他的工作。

　　Go in quietly so as not to wake the baby.

　　轻点进去，别惊醒了婴儿。

　　2)　so kind as to ---劳驾

　　Would you be so kind as to tell me the time?

　　劳驾，现在几点了。