be up to do还是doing

be up to doing是正确的，没有be up to do这个用法。

be up to加名词或现在分词doing ，中文意思是“胜任；该由……负责；取决于……；从事，忙于”

That's why it may be up to consumers to move the needle on chip and PIN.这就是为什么可能要由消费者来移动芯片和 PIN 上的针。

They said that this would be up to those device makers.他们说，这将取决于这些设备制造商。

be up to doing介绍

释义

取决于……；该由……负责；胜任；从事，忙于

例句

And when you find a lone nut doing something great, have the guts to be the first one to stand up and join in.

当你发现一个孤独的怪人做了一些伟大的事情，你得有勇气去成为他的第一个追随者支持他和参与进来。

I took an elevator ride up to the top of this ridiculously high building, knowing I would be doing something I didn't want to do.

我搭乘电梯直达这个高得不得了的建筑物，深知道我会作一件我不愿意做的事。