his works-translated into more than 30 languages-are produced more often than those of any other contemporary German dramatist. 这是正确的答案,我的疑惑是,前面不是 works are produced more than 吗,为什么后面不是more than are those of any other...补上,白勇语法中的省略原则不是说,主句谓语动词短语使用“助动词”,从句可以省略verb,保留助动词吗?这里are也是被动语态中的助动词呀,为什么不省略呢?还是因为produced在这里不是谓语动词的原因? 这类题目应该怎么做啊!