1、smile作名词是微笑、笑容的意思，看例句，She has a nice smile. 她笑得很甜。He winked and gave me a smile. 他眨了眨眼，冲我笑了一下。
2、smile作动词是微笑和笑，看下面例句，He smiled and shook my hand. 他笑着和我握了手。
3、我们常常形容人笑得合不拢嘴，用smile from ear to ear, 就是笑得嘴裂到耳朵边上了。
4、例如，She'll smile from ear to ear if we give her a bike for her birthday. 假如她知道我们会送自行车给她做生日礼物，她必定会笑得合不拢嘴。
