问题补充:
I spoke to him kindly him .
A. not to frighten
B. in order to not frighten
C. for not frightening
D. so as not to frighten
答案:
A. not to frighten
B. in order to not frighten
C. for not frightening
(答案→)D. so as not to frighten
解析:不定式的否定式在不定式to前加not。句意:我对他和蔼的说话为的是不使他害怕。