Could you teach me to do that?
你能教我干那活儿吗？
I've got far too much to do.
我要做的事情太多了。
He had plenty of work to do.
他有一大堆工作必须做。
He was unsure of what to do next.
他对下一步该做什么犹豫不定。
What are you trying to do?
你想要做什么？
He's not going to do it, no siree.
他不会干这事的，绝对不会。