You must signal which way you are going to turn.
你要朝哪個方向轉，必須發出信號。
Quite a few people are going to arrive early.
相當多的人打算早到。
The next few weeks are going to be crucial.
今后幾個星期是關鍵。
It just goes to show you can't always tell how people are going to react.
這正好說明你不可能總是知道人們會如何反應。
You need to signpost for the reader the various points you are going to make.
你需要向讀者介紹你將闡述的各個論點。