B 开头单词
be surrounded by 被包围
be surprised at 对…感到惊奇；使…感到意外；对……很吃惊
be surprised 感到惊奇
be sure to do sth 一定会做某事；务必做某事
be sure to do 一定做某事；确定做
be sure of oneself v. 自信；有自信心
be sure of 确信；对…有把握
be sure about 对…有把握；确信
be sure 肯定；确信
be supremely happy 喜之不尽
be supposed to do 应该干……
be supposed to 应该；被期望
be supportive of 支持...
be supported by 由……支持（supported是support的过去分词）
be superior to temptation 不受引诱
be superior to 不受诱惑；不屈服于；优越于