Anyone who agrees with what I said may raise your hand.

解释：任何同意我所说的人都可以举手。

He is no longer a little boy that he used to be.

解释：他不再是以前那个小男孩了。

Mr. Ling is just the boy whom I want to see.

解释：凌先生恰巧就是我想见的那个男孩。

The man who/whom you met just now is my friend.

解释：你刚刚见到的那个人就是我的朋友。

When I wrote the following pages, or rather the bulk of them, I lived alone, in the woods, a mile from any neighbor, in a house which I had built myself, on the shore of Walden Pond, in Concord, Massachusetts, and earned my living by the labor of my hands only.

解释：当我写下面这些页，或者更准确地说，大部分页时，我独自一人住在森林中，离任何邻居一英里，在我亲手建造的房子里，在马萨诸塞州康科德的瓦尔登湖畔，仅靠双手劳动养活自己。

The number of people that come to visit this city each year reaches one million.

解释：每年参观这个城市的人数达到一百万。

Where is the man that I saw this morning？

解释：我早上看到的那个人在哪里？

The person that /whom you introduced to me is very kind.

解释：你介绍给我的那个人非常友好。

这些例句展示了定语从句在不同语境下的应用，既有常见的用法也有较为幽默的表达。希望这些例句能帮助你更好地理解和运用定语从句。