1.crack a smile 微笑；莞尔一笑
例I was telling my jokes to her, but Susan never cracked a smile.
我当时在和她说笑话，但她怎么都不笑。
2.smile from ear to ear 高兴大笑得合不拢嘴
例 She was smiling from ear to ear as she accepted the prize.
她获奖的时候开心得高兴地笑了起来。
3.be all smiles 笑容满面
例 She spent the whole of yesterday shouting at people and yet this morning she’s all smiles.
她昨天一天都在和别人大吵大叫的，今早却笑容满面。
4.force a smile 强颜欢笑
例 He forced a smile in the face of such embarrassing situation.
面对如此尴尬的局面，他只好厚着脸皮强颜欢笑。
5.smile away 一笑置之
例 She just smiled away whenever sheheard of rumors about her and another actor.
她每次听到自己和另外一位男演员的谣言之时，只是一笑置之。
6.beam with smile 笑容满面
例 The old man beamed with smile just like a little kid in front of a candy store.
这位老人喜笑颜开，就像个站在糖果店前的小孩似的。
7.a hearty smile 会心一笑；开怀大笑
例 A hearty smile always attracts people.
会心的、由衷的一笑总能吸引到别人的注意。
8、smirk 幸灾乐祸地笑
Two men standing nearby looked at me， nudged each other and smirked。
站在旁边的两个男人看着我，互相用胳膊肘轻碰对方，幸灾乐祸地笑着。
9、 chuckle 轻声地笑
The banker chuckled and said， “Of course not。”
银行家轻声笑了笑，说道，“当然不。”
10、 titter 窃笑
There was nervous tittering in the studio audience。
演播室观众席中传来紧张的窃笑声。