have difficulty doing sth 为什么不用 to do sth?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/14 18:57:16

have difficulty （in） doing sth
固定短语,通常in是可以省略的.
再问：那我为什么不可以用have difficulty to do sth ？还有为什么 have fun doing sth 不是to do 二者区别在哪里
再答：其实关于这些结构为什么是这样，我也百思不得其解，因为老师上课都是讲固定短语。（这是固定搭配，要记住啊，考试经常考，别弄错了啊）老是这样说，没说什么理由。这文化先人留下来的东西，不懂怎么解释！~

have difficulty doing sth 为什么不用 to do sth? has difficulty doing sth还是has difficulty to do sth have difficulty doing sth 是否有have a difficulty doing sth.It's difficult to do sth.It's have difficulty in doing sth have difficulty doing sth 还是have difficulties do have sth doing / have sth to do/ have sth do/ have sth done have difficulty in doing sth .have trouble in doing sth 是have difficulty doing sth还是have difficult doing sth? have sth to do sth 什么意思 ? have sb do sth =get sb doing sth? have nothing to do but do sth还是doing sth have fun doing sth.还是 have fun to do sth.