1·I don't know how this happened.
我不知道这事怎么发生的。
—— 《牛津词典》
2·You know how prickly she is.
你知道她多么容易生气。
—— 《柯林斯英汉双解大词典》
3·I don't want to know how he died.
我不想知道他是如何死的。
—— 《柯林斯英汉双解大词典》
4·I don't know how you stick that job.
我不知道那活儿你怎么受得了。
—— 《牛津词典》
5·I don't know how she puts up with him.
我不明白她怎么受得了他。
—— 《牛津词典》
6·He did not know how he ought to behave.
他不知道自己应该怎样表现。
—— 《牛津词典》
7·We don't know how the transcript leaked.
我们不知道抄本是怎样泄露的。
—— 《柯林斯英汉双解大词典》
8·You never know how he is going to react.
你根本不知道他会作何反应。
—— 《牛津词典》
9·I don't know how you can eat that stuff!
我不明白你怎么能吃那种东西！
—— 《牛津词典》
10·I don't know how you tolerate that noise!
我不知道你怎么能忍受那样的噪音！
—— 《牛津词典》