laugh、smile、giggle、grin、beam与sneer这些动词均含“笑”之意。
laugh : 最常用词，指因喜悦、愉快或轻视而出声的笑或大笑。
- They laughed at her jokes.
听了她讲的笑话他们都笑了。 - I couldn't stop laughing.
我情不自禁地笑个不停。 - I said he'd have to give a talk and he laughed nervously.
我告诉他说他必须发言，他听后紧张地笑了起来。
smile : 指面露微笑，侧重于无声。
- Amy had a big/broad smile on her face.
埃米脸上满是笑容。 - 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。
giggle : 指发出咯咯的笑声，较多地用于女人或孩子。
- Stop that giggling in the back row!
别在后面傻笑！
grin : 指露齿而笑。
- He grinned at me from the doorway.
他在门口向我咧着嘴笑。 - What are you grinning about?
你龇牙咧嘴笑什么？
（拓展学习：小词详解 | grin）
beam : 书面用词，指人因心情舒畅而发出的笑，即喜形于色地笑。
- She beamed with delight/pleasure at his remarks.
听完他的话她高兴得眉开眼笑。 - The child beamed at his teacher as he received the award.
那个孩子在领奖时对他的老师报以微笑。 - "I'm so pleased to see you," he beamed (= said as he smiled).
“见到你很高兴，”他微笑着说。
sneer : 指冷笑、嘲笑。
- You may sneer, but a lot of people like this kind of music.
你可以嗤之以鼻，但很多人喜欢这种音乐。 - She'll probably sneer at my new shoes because they're not expensive.
她也许会笑话我的新鞋子，因为买得很便宜。 - "Is that the best you can do?" he sneered.
“那就是你最大的能耐了吗？”他嘲笑着说。
（拓展学习：小词详解 | sneer）
