结构为主语+be+形容词/过去分词+名词从句：
I am delighted that you passed your exam.
你考试通过了，我很高兴。
这一结构中可以使用
(a)表示感情的形容词：glad，pleased，relieved，sorry。
(b)表示渴望、信心等的形容词/分词：afraid，anxious，aware， certain，confident，conscious，convinced。
anxious后面要求使用thatshould结构。
Im afraid that I cant come till next week.
恐怕我下星期才能来。
Are you certain tht this is the right road?
你肯定这条路对吗?
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