eg：I got up late.
I was late for school.
Because I got up late, I was late for school. （原因状语从句）
I got up late，so I was late for school. （结果状语从句）
eg：Where I live there are plenty of trees.
Wherever you work, you will gain much valuable experience as long as you are willing to work.
Wherever=no matter where
Everywhere they went, they were warmly received.
Where there is a will, there is a way.
eg: Where you are confident，you will succeed.
eg：Where previously the bank had concentrated on the big infrastructure projects , such as dams, roads and bridges，it begin to switch to projects which directly improved the basic services of a country.
concentrated on ：集中于……