"盘子"的英文是"plate". 例句：

Can you pass me a plate, please?
I need to wash the plates before dinner.

注意，英语中的"plate"通常指的是用来盛餐的平底的碟子，而不是指餐具的总称。如果你想表达"餐具"的概念，你可以用"dishware"或"tableware"来表示。例如：

I need to wash the dishware before dinner.
Can you pass me a knife from the tableware drawer?