1.reach是及物动词，后可直接加地点名词或地点副词做宾语。现在分词，过去式，过去分词如下：reach-reaching-reached-reached。
例如：I will call you as soon as I reach
Beijing.我一到北京就给你打电话。
She reached there yesterday.她昨天就到了那儿。
2.get 是不及物动词。后可直接加地点副词做宾语，加地点名词做宾语时必须家加介词to,即get to。现在分词，过去式，过去分词如下：
get-getting-got-got/gotten。
例如：I will call you as soon asI get to
Beijing.我一到北京就给你打电话。
She got there yesterday.她昨天就到那儿了。
3.arrive是不及物动词。后可直接加地点副词做宾语，加地点名词做宾语时必须家加介词in,at,on。即arrive in到达某个区域，往往指大地方，arrive at到达某个地点，即往往指小地方。arrive on 到达某个现场。现在分词，过去式，过去分词如下
arrive-arriving-arrived-arrived。
I will call you as soon as I arrive in Beijing.
我一到北京就给你打电。
I will call you as soon as I arrive at the bus station.我一到你车站就给你打电话。
Tom was the second person who arrived
on the scene. Tom是第二个到达现场的人。
She arrived there yesterday.她昨天就到那儿了。
总之，reach sp（名词）=get to sp（名词）
=arrive in/at /on sp（名词）。
reach sp（副词）=get sp（副词）=arrive sp（副词）。
