无信心的

例句：

1. 1.She was very unconfident about herability to pass the exam.
   她对自己通过考试的能力非常没有信心。
2. 2. Theteam leader was unconfident about their chances of winningthe game.
   团队领导对他们赢得比赛的机会感到非常没有信心。
3. 3. He was unconfident about his ability to solve the problemon time.
   他对按时解决这个问题的能力感到没有信心。