1.make a trip旅行
I want to make a trip to USa.
我要到美国去旅行。
2. set foot on 踏上
Nobody has ever set foot on that island.
没有人曾经登上过那个岛屿。
【拓展】set foot in 进入, 踏进
I told him never to set foot in my house again.
我告诉他再也别踏进我家的门。
3. as far as 只要
As far as the world went, he believed in the conventions.
只要世界还存在,他就相信风俗。
4. exist vi.存在,它是不及物动物,其后不能接宾语
That department has ceased to exist.
那部门已不复存在。