"I gave myself an Engpsh name" 可以用 "I chose an Engpsh name for myself" 或 "I named myself in Engpsh" 来表达。
这个短语的来源是因为有些人喜欢用英文名字来给自己取名字，这样在国际交往或使用英语时会更方便。
例句：
"I gave myself an Engpsh name because it sounds more professional in international business meetings." (我给自己起了个英文名，因为在国际商务会议中会听起来更专业。)
"I named myself in Engpsh because it makes it easier for my Engpsh-speaking friends to pronounce." (我用英文给自己起名字是因为这样我的英语朋友发音会更简单。)