knowing that后面加动词原形。
knowing：v. 知道; 知悉; 了解; 认识到; 懂得; 意识到; 确信; 确知; 肯定。
that：pron.那个;(指较远的人或事物或指已提到过或已知的人或事物)那;(特指)那;那种;那些。
扩展资料
He derived great satisfaction from knowing that his son was happy.
得知儿子很幸福他深感欣慰。
It doesnt really help matters knowing that everyone is talking about us.
知道大家都在议论我们也于事无补。
He took his time answering, knowing that he must select his words with great care.
他意识到自己必须言辞谨慎，于是不慌不忙地回答着问题。
He said his goodbyes knowing that a long time would pass before he would see his child again
他道了别，知道要过很久才能再见到他的孩子。
In the future people can go to a football match knowing that they are safe from hooliganism
今后人们去看足球比赛时可以不必担心会受到足球流氓的骚扰。
