Why all the smiling faces?为什么是 smiling 不是smile?

Why all the smiling faces?为什么是 smiling 不是smile? why all the smiling faces.为什么要加the? Smile-smiling smiling 英语翻译是smile more还是 smiling more?还是其他? 喜欢微笑是like smile 还是like smiling Smiling faces every day a little more the doll is smiling, I saw the happiness in her smiling 为什么用smiling 不用smiled Stand close to Winky and just smile 为什么选smile 不选smiling 十分紧急 The smiling boy needs a pen bought by his mother.请问smiling是不 smile and keep smiling什么意思