1. understand 理解
I don't catch your meaning. 我没听懂你的话。
2. catch one's attention/eye 吸引注意力
Don't try to catch my attention / eye, because it's not gonna work.
3. catch up (抓紧赶上进度)
Hey, it's been a long time. We need to catch up.
Hey, we've been drinking for a long time. You need to catch up.
4. catch up (叙旧)
Hey, it's been a long time. We need to do some catching up.
5. catch a movie 看场电影
Hey, do you wanna catch a movie with me?
6. Catch you later. 回见