have difficulty in doing sth .have trouble in doing sth

have difficulty in doing sth .have trouble in doing sth have difficulty in doing sth have trouble in doing sth 关于have difficulty in doing sth 变形 用have difficulty in doing sth 造句 have difficulties/difficulty in doing sth? have difficulty doing sth have some difficulty (in) doing sth.中的 difficulty可数吗 在句式“have problem/difficulty/trouble + (in)doing sth./with st have trouble doing sth have difficulty还是difficultyies （in）doing sth? have trouble 【in】doing sth?in可以省略?