I have trouble waking up in the morning. 早上起来对我而言是件苦事。/ 早上起床很困难。

(1) 改为否定句
—> I don't have trouble waking up in the morning.
因为这里的 have 是实义动词，所以用 don't 表示否定。

(2) 主语改为 you，并改为以 why 开头的疑问句 
—> Why do you have trouble waking up in the morning?
先改成 you 为主语，就是 You have trouble waking up in the morniing，然后变成 why 疑问句 Why do you have trouble waking up in the morning? 因为是特殊疑问句，所以句尾读降调。

(3) 主语改为 Jim（吉姆），再改为疑问句
—> Does Jim have trouble waking up in the morning?
先用 Jim 做主语，要用第三人称单数，就是 Jim has trouble waking up in the morning，然后变成疑问句 Does Jim have trouble waking up in the morning?