All the biscuits that were sent were carefully weighed. The largest was 713 pounds. It seemed certain that this would win the prize.

　　16. All the biscuits that were sent were carefully weighed.

　　凡送来的饼干都仔细地称量。

　　语言点1:句子结构分析:that引导定语从句，意为“…的饼干”。

　　语言点2:weigh既可表示“重达…”,也可用被动语态形式，表示“被称重”。

　　17. The largest was 713 pounds.

　　最重的一个达 713磅。

　　语言点:句子结构分析:本句是一个省略句，可还原为The largest biscuit was 713 pounds.

　　18. It seemed certain that this would win the prize.

　　看来这个饼干获奖无疑了。

　　语言点:句子结构分析:it seemed certain that…是固定搭配，表示“…确定无疑”。It为形式主语，真正的主语是that引导的从句that would win the prize.即“…已经是确定无疑的了”。