用has become代替,例如:
1、May Day has become a venerable institution.五朔節已經變成一個神聖莊嚴的傳統節日。
2、The environment has become a very hot issue.環境已成為很熱門的話題。
3、The Internet has become part of everyday life.互聯網已成為日常生活的一部分。