1.你一到北京就把你的新住址告诉我,好吗(as soon as)
Please let me know your new address as soon as you arrive in Beijing, will you?
2.很多穿着鲜艳裙子的女孩聚集在礼堂的入口处.(gather)
There are lots of girls in colorful skirts gathering at the entrance of the assembly hall/auditorium.
3.别担心,雨停了他会回来的.(not.until)
Don't worry, he's not going to be back until the rain stops.
4.从现在开始,我们应该更加努力学习英语.
We should study English harder from now on.
5.火车开走后他才到达火车站.(not,until)
He did not get to the railroad station until the the train had left.
6.我来这儿已有两周了.(for)
I've been here for two weeks.