藏青妹妹
表示存在一般用therebe句型。举例：thereisabirdinthetree.树上有只鸟。表示发生可以用happen，occur，takeplace。happen一般是somethinghappentosomebody.occur,takeplace是somethingoccur/takeplace.望采纳！！
爱家酒店
to existto be【例句用法】1. 年轻女子被举荐入宫（觐见君主）的风俗已不复存在。 The custom of young ladies being presented at court (ie formally introduced to the monarch) has disappeared.
优质英语培训问答知识库
