Examples
tā他dé le得了fèi yán肺炎，nán guài难怪tā他zài在bù tíng不停de的ké sou咳嗽。
他得了肺炎，难怪他在不停的咳嗽。
He's got pneumonia. No wonder he is coughing nonstop.
难怪我们没有办法说话。
No wonder we could not speak.
难怪她表示不想再见到他了。因为他们分手了。
No wonder she doesn't want to see him again. Because they broke up.