“smile at”和“smile to”的区别是：
smile at较常用，只是微笑；
smile to较少用，除微笑外，还有赞许的意思。
一、smile at，对…微笑， 以微笑对待
例句：
1、The girl flashed a dazzling smile at the television crew and cameras bearing down on her.
这个女孩对着向她围拢的电视台工作人员和摄影机灿烂一笑。
2、She continued to smile at the ranks of cameras on their doorstep.
她依旧对着门口的一排排照相机微笑着。
3、But what I notice is that people smile at me.
但我注意到有人对我笑。
4、I love the way you smile at me.
我喜欢你对着我微笑的方式。
5、He would never smile at me or Emily again.
他再也不会对我或埃米莉笑了。
6、I never smile at people who are rude to me.
我决不会向对我无礼的人微笑。
7、You can hardly expect her to smile at you after what you said.
你说了这些话，就很难再见她对你的笑脸了。
8、Please smile at me.
请对我微笑。
9、I believe that the goddess of victory will smile at me.
我相信胜利女神一定会对我微笑。
10、He smiled a forced smile at me and went away.
他朝我勉强地笑了一下然后走开了。
二、smile to，微笑，笑容; 以微笑表示; 以微笑完成; 微笑; 赞许; 不在乎
例句：
1、It brought a wide smile to his face and laughter to his eyes.
这让他眉开眼笑。
2、I will not cry when you leave, but smile to let it go.
我不会哭当你离开，但笑容让他走了。
3、If you smile to people, they will also smile to you.
你果你面带笑容，别人也会对你露出笑容。
4、She will smile to hear her husband say," I love you."
她仍然会得到鼓舞。她会微笑听着丈夫对她说：“我爱你。”
5、Each frown I meet only prepares me for the smile to come.
我只会准备每个皱眉我因为微笑来。
6、They are always friendly and always smile to me.
她们也总是很友善，总是对我微笑着。
7、You're the sunshine to light my day and you're a tender smile to guide my way.
妈妈，您是一缕阳光，照亮了我的生活；您用一个温柔的微笑引导我前进的方向。
8、When difficulty is coming, please smile to it, and use your wisdom to solve it.
当困难来了，请给它的微笑，用你的智慧去解决。
9、The world's most courageous thing, a smile to hear you say that you love.
世界上最勇敢的事情，就是微笑着听你说你们之间的爱情。
10、Wait for you take sunlight to smile to say my love you as usual.
等待你带着阳光来笑说我爱你如昔。