He told us whether a picnic was still under discussion A. to have B. having C. have D. had 答案 B. 解析 考查非谓语的用法.分析句子可知whether +to do sth. 做了宾语从句的主语, He told us 后省略了宾语从句的引导词that. 24 many times, he finally understood it. A. Told B. Telling C. Having told D. Having been told 答案 D 解析 考查非谓语的用法.tell与主语之间的关系是被动和完成的关系.所以用having been done来表示被动和完成. 【查看更多】
