burst into laughter 突然大笑

crack a smile 展顏微笑，莞爾一笑

explode with laughter 哄堂大笑

force a smile 強作歡顏

burst into gales of laughter 爆發(fā)出陣陣笑聲

grin with delight 高興的咧嘴而笑

a hearty burst of laughter 一陣爽朗的歡笑

in stitches 笑不可支

laugh at 嘲笑

laugh it off 一笑而過

laughingstock 笑料;笑柄

laugh in the breeze 迎風歡笑

laugh oneself to death 差點沒笑死

laugh people around into a better humour 笑得周圍的人心情好起來

laugh a hearty laugh 放聲大笑，開懷大笑

laugh and grow fat 心寬體胖

roars of laughter 大笑聲

a saccharine smile 諂笑，諂媚的笑

roll in the aisles 樂不可支，笑得東倒西歪

scream with laughter 笑得前仰后合

snicker 竊笑

snort (諷刺、輕蔑地)高聲大笑

shriek with laughter 尖聲狂笑

smile shyly 羞嗒嗒地微笑

beam with smiles 笑容滿面;笑逐顏開

be all smiles 笑容滿面, 喜氣洋洋

toothpaste smile [美口]牙膏廣告上露出皓齒的微笑

simmer with laughter 忍俊不禁

smile on sb. 朝某人微笑

smirk 傻笑;假笑

smile bitterly 苦笑

giggle 咯咯地笑

grin 咧嘴而笑

grin from ear to ear 嘴咧得大大地笑

chuckle 輕聲笑;咯咯笑