have fun doing sth与have fun doing sth有什么区别？

doing在这个句子中作什么成分

have a good/difficult time in doing sth have difficulty in doing sth have problems in doing sth have trouble in doing sth have fun in doing sth 动名词短语做介词in 的宾语，表示“在做某事的过程中”，在以上搭配中，介词in 都可省略。 另外，还可用介词“with +名词”替换in doing sth。 I had much difficulty (in) finding his house。 我费了很大劲才找到他家。 We will have a...全部

  have a good/difficult time in doing sth have difficulty in doing sth have problems in doing sth have trouble in doing sth have fun in doing sth 动名词短语做介词in 的宾语，表示“在做某事的过程中”，在以上搭配中，介词in 都可省略。
  另外，还可用介词“with +名词”替换in doing sth。 I had much difficulty (in) finding his house。 我费了很大劲才找到他家。 We will have a lot of fun (in) learning English。
   在学英语过程中,我们会得到很多乐趣。 He had many problems with his homework。 他做作业遇到了很多问题。收起