认真的的用法和样例：
例句
-
我是认真的，你必须说话算数。
I am serious; you must keep you word. -
未婚女子一生中最困难的工作，是要证明一个男性（对她）的意思是认真的。
The hardest task of a girl's life is to prove to a man that his intention is serious. -
我相信他说他会来是认真的。
I'm sure he was earnest when he said he would come. -
我喜欢认真的学生。
I like earnest pupils.
