has become是什麼時態

Thailand has become the tourist mecca of Asia.

泰國已經成為亞洲旅遊勝地。

The Internet has become part of everyday life.

網際網路已成為日常生活的一部分。

Since her death, she has become a cult figure.

她死後已成為人們頂禮膜拜的人物。