be surprised to do sth是吃惊干某事吗 还是对某事感到吃惊 还是能理解为被动语态

be surprised to do sth是吃惊干某事吗 还是对某事感到吃惊 还是能理解为被动语态 be surprised at sth是对某事感到吃惊的意思,那如果at 后面是sb, 容易做某事 是easy to do sth 还是be easy to do sth 对……感到吃惊为什么是be surprised at 不是be surprised with? 能够做某事是be able to do sth还是doing sth 英语忙于干某事是busy doing 还是to do? used to do sth是过去经常做某事还是习惯于做某事 used to do sth.是被用来做某事还是过去常常做某事 fail to do sth是未能做某事?还是失败做某事? prepare for sth.为某事做准备 be prepared to do /for sth.对（做）某事有所准备 尽力做某事是try one's best to do sth.还是try to do sth. 准备做某事 是get ready to do sth还是ready to do sth