knows:v.知道;知悉;了解;认识到;懂得;意识到;确信;确知;肯定;
know的第三人称单数
例:
The principal knows all the students by name.
校长能叫出所有学生的姓名。
Everyone knows what's best for him or herself.
人人都知道对自己来说什么是最好的。
She knows every student in the school.
她认识学校里的每一个学生。
No one knows for sure what happened.
谁也不知道究竟发生了什么事。
Who knows what changes tomorrow may bring?
谁知道将来会有什么变化?
She knows how to get round her dad.
她知道怎样讨她爸爸的欢心。