interested in后面接动词的ing形式，完整结构为be interested in doing sth。表示对......感兴趣。 例句 Im very interested in history. 我很喜欢历史。 I...
would be done是过去将来时。 如He said that something would be needed to finish the task. 他说要完成这项任务，需要某种条件。 例句 The problem would...
