You must signal which way you are going to turn.
你要朝哪个方向转，必须发出信号。
Quite a few people are going to arrive early.
相当多的.人打算早到。
The next few weeks are going to be crucial.
今后几个星期是关键。
It just goes to show you can't always tell how people are going to react.
这正好说明你不可能总是知道人们会如何反应。
You need to signpost for the reader the various points you are going to make.
你需要向读者介绍你将阐述的各个论点。