enter是延续动词

例句

1、

If they entered the building they would be breaking the law.

如果进入那栋大楼，他们就会触犯法律。

2、

The investigation has entered a new phase.

调查已进入新阶段。

3、

She entered public life at the age of 25.

她25岁时开始了经常抛头露面的工作。