big egg前面用a还是an,egg前面用the还是an

 big egg前面用a

例句

1.

After a few days, the big egg finally hatched and out came a strange-looking duckling with gray feathers.

几天后，那颗大蛋终于孵出一只长相奇怪的灰毛鸭。

2.

But the big egg was stolen by the mice and ate out.

这时大鸡蛋被老鼠偷去了，险些被吃掉。

用a big egg，因为b是元音音标。