忽然的用法和样例：
例句
-
起风了，雨点忽然落下来。
A wind arose, and rain drops began falling all at once. -
那男孩忽然哭了起来。
The boy began crying all of a sudden. -
我一转身，忽然看见了汤姆。
Suddenly I turned and caught sight of Tom. -
我忽然想起一个好主意。
A good idea suddenly occurred to me. -
那水手忽然看到一名海盗跳上了甲板。
The sailor suddenly saw a pirate jumping onto the deck.
