reach：够得着某个地方；到达某个的地方。
reach to：延伸到。
reach：
到达
I reached Mars last year, I have found nothing but dust here.
够得着
I bought a new pair of trousers on Taobao, but it only reaches halfway down my legs.
reach to：The railway line will soon reach to our town.铁路不就就要延伸到我们镇了。
