We have a lot to catch up on. 我们可以好好叙叙旧
“catch up”是“赶上”的意思,朋友久没见面,所以“赶上”的,自然是交换彼此以往生活的点滴。若是你因故没去上课,就得要“catch up on the classes you missed,把请假时的上课进度补回来”。
A:It's been almost a year since we've seen each other. 我们快一年没见了。
B:You bet. We have a lot to catch up on. 没错。我们可以好好叙叙旧。
A:I haven't seen you in class for over a week. 我已经一个多星期没看你来上课了。
B:Well, I've been sick. I have a ton of homework to catch up on.
我一直在生病。我还有一大堆功课要赶。