arrive(d)
1.arrive的过去分词arrived可以用作形容词，作“已到的”解，如the newly arrived traveller和Arrived at the shop, I asked to see some shirts。但is arrived，are arrived等现在不普通。
2.arrive home里的home是副词，习惯不说arrive at home。当然，在arrive at his home里必须有at。
3.arrive(d)是一时的动作，所以不可说He has arrived for a week，该改作He arrived a week ago或It is a week since he arrived。
