1. after 在……之后
After I visit Shanghai I'll travel up the Yangtze. 访问上海之后,我将溯长江而上
2.before 在……之前
It would be months before he was fit for the work. 要过好几个月他才能适应工作.
3. since 自从……
It is just a week since we arrived here. 我们到这里才一个星期.
4 .until (till) 直到……
I shall stay here until (till) I've completed my studies. 我要在这里待到学习结束为止.
5.and
We went to the library and borrowed some books.我们去了图书馆,借了一些书.
6.then然后,接着
He fell off his bike,then cried.他从自行车上摔了下来,接着就哭了起来