1．开头常用句式：
We will have a field trip next week.
我们下周要去野外旅行。
Have you ever had a field trip with some strangers?
你曾经和陌生人一起野外旅行过吗？
It is exciting to explore a totally strange place.
去一个完全陌生的地方探索是很令人兴奋的。
I have been to an island which is almost empty.
我曾经去过一个几乎没人的小岛。
