zhǐ
1
only
2
merely
3
just
4
but
有一个孩子。
I only have one child.
是一个小孩子,很多事情都不懂。
He's just a kid, he doesn't understand a lot of things.
吃了一片面包。
I only had one piece of bread.
带手机。
I only brought my phone.
做了一件事
I only did one thing