The tree fell with a great crash.

　　那棵樹(shù)嘩啦一聲倒了。

　　He chopped a branch off the tree.

　　他從那棵樹(shù)上砍下一根樹(shù)枝。

　　The tree is in bud already.

　　樹(shù)已發(fā)芽。