以s,x,ch,sh,等结尾的单词+es，
sandwich复数：sandwiches
n.夹心面包片;三明治;夹心蛋糕
v.把…夹在…之间;挤在…中间;把...做成三明治
例句：
John handed round the plate of sandwiches
约翰把三明治盘子递给每一个人。
I had two peanut butter and jelly sandwiches.
我吃了两个放了花生酱和果酱的三明治。
Too often, picnic preparation consists of throwing together some sandwiches and grabbing an apple.
准备野餐往往不过是随便做几个三明治，再来一个苹果。
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