没有leafs这个写法，leaf的名词含义是叶子，复数形式是leaves，动词含义是翻…的页，匆匆翻阅，第三人称单数是leaves。leaves可以看做是leaf的名词复数和三单形式，leaves也是动词“离开”leave的三单形式。
leaf的含义及例句
n.叶；叶片；叶子；有…状叶的；有…片叶的；(纸)页，张；(尤指书的)页
v.翻…的页，匆匆翻阅
第三人称单数：leaves
复数：leaves
现在分词：leafing
过去式：leafed
过去分词：leafed
The leaves on the plant had shrivelled up from lack of water.
因为缺水，植物的叶子已经枯萎了。
The leaves of certain trees are poisonous to cattle.
某些树的叶子会毒害牲畜。
leave的含义及例句
v.离开(某人或某处)；遗弃；丢弃
n.休假；假期；准许
第三人称单数：leaves
现在分词：leaving
过去式：left
过去分词：left
It's a long time since they left.
他们已经离开很久了。
When I left they were all still hard at it.
我离开的时候他们都还在努力工作。