A leaf from a tree的用法和样例：
- Give his mother a leaf from a tree
- He stooped over the table, pulled a leaf from a warped pocket-book.
- They take pleasure in reading whatever magazines are open, or rearranging furniture in their homes, or slipping into conversation the way a leaf falls from a tree.
- He tore a leaf from the calendar.
- The boy fell from a tree and fractured his arm.