1) getting you down 使你难过

Hey, what's getting you down? 嘿，什么事这么难过?

I just can't seem to get higher than a C+ in math class. 我数学最多就得一个C+。

2) getting by 勉强度过，凑合

I've been getting by on some friends' notes from class and I am just not understanding this new chapter!

我一直在凑合用我同学的笔记，但是就是看不懂最新的这一章!

3) getting along 与某人相处得很好

I hate fighting with my mom. I'm so sad when we're not getting along. 我不想和我妈斗。跟她处不好让我很难过。