自尊自大的

例句：

1. 1.He is self-important and thinks he knows everything.
   他自大，认为自己无所不知。
2. 2.The arrogant leader ignored the opinions of his subordinates.
   傲慢的领导者忽视了下属的意见。
3. 3.She was presumptuous in her assumption that she could solve all problems.
   她自以为能解决所有问题，这是过于自信了。