i planted a tree the tree is taller than the house怎麼合成

題目：

i planted a tree the tree is taller than the house怎麼合成

解答：

The tree I planted is taller than than the house.
I planted a tree which is taller than the house.
再問： 爲什麼可以這樣合
再答： 定語從句、同位語從句，用於進一步解釋說明。