练习册

  • 练习册
  • 试题
    2．不定式的进行式to be doing 和现在分词的一般式doing/being done只用来表示非谓语动词和谓语动词同时发生. 例如:1).The secretary worked late into the night,preparaing the long speech for the president. 2).They pretended to be sleeping when Mother came in. 【查看更多】

     

    题目列表(包括答案和解析)


    同步练习册答案