In thefirst/initial/original place/stage/step;

　　First = Firstof all = Firstly = initially = originally=To begin

　　Followingthis

　　Next/Then/After/Second

　　Priorto, until

　　the first stage involves … / in the second stage / in the third stage /

　　The next step in the stage is that….

　　After that/at the same time/in the meantime/meanwhile/also

　　Before doing

　　Subsequently

　　in thelast stage

　　Finally

　　表达时间阶段

　　after aperiod of ..months /days/minutes,

　　during…

　　连接词表达目的

　　inorder to / in order that; so as to / so that/in preparation for