这三个词都可表示“到达某地”，正确的用法是:

1、get to之后可加地点,如：

2、reach是及物动词，后面可以直接跟宾语，也就是说后面不用介词,直接跟地点，如：

When I reached the station, the train had left.

He has arrived in Japan/Beijing/Paris/London.

I arrived at the hospital at 7:00.

如果后面跟地点副词，则不用加介词，如：