on a smile 还是 with

on a smile 还是 with with a smile on his He said with a smile on his face 还是in his face with a smile 还是 with smile? 为什么? smile微笑可数吗 wear a smile on one's face与with a smile on one's face respond me with a smile还是respond to me with a smile? Benny said,with a big smile on his face是什么意思? There must be an angel with a smile on her /jdi/Face life with a smile on our She patted me on_____shoulder with a smile on ____ face. Lily often talks to us with a smile on her 英语翻译带着微笑究竟是with smile,还是with a smile?