叶子在英语中可以说作"leaf"，来源于旧英语"leaf"，意思是"草叶"或"植物叶子"。下面是一些英文例句和它们的中文翻译：

The tree has green leaves. 这棵树有绿色的叶子。

The wind blew the leaves off the tree. 风把树上的叶子吹落了。

The leaves were falling from the trees. 叶子从树上落下来。

He picked up a leaf and examined it. 他捡起一片叶子检查了一下。

The plant has leaves that are shaped like a heart. 这种植物的叶子呈心形。