1. He became very bigheaded after winning the competition.
他在比赛中获胜后变得很自负。

2. Don't be so bigheaded, nobody likes a show-off.
不要那么自负，没有人喜欢炫耀的人。

3. She's always been a bit bigheaded about her accomplishments.
她一直对自己的成就有点自负。

4. His bigheaded attitude caused him to lose many friends.
他的自负态度导致他失去了很多朋友。

5. It's important to stay humble and not get bigheaded when you achieve success.
当取得成功时，保持谦逊，不要变得自负，这很重要。

6. Being bigheaded will only alienate people and hinder your personal growth.
自负只会疏远人们，阻碍你的个人成长。