laugh 大笑
smile 微笑
snigger =snicker：窃笑
burble / titter：窃笑
chuckle：抿嘴笑，暗自笑
He is grinning from ear to ear 他笑得合不拢
laugh one’s head off 笑掉大牙
Beah with smiles笑诼颜开
giggle咯咯笑
grin露齿而笑
mock /jeer at giggle嘲笑
force a smile 苦笑
sneer 冷笑
guffaw 狂笑
参考资料：http://blog.sina.com.cn/s/blog_4bd45a3c0100dptc.html