D 其它更详细的应该是myself sitting 或 myself seated sit 不及物动词,sit down坐下,sit up坐好来,坐直, 无被动形式.
seat 可以是名词:座位take a seat , have a seat 也可以是动词,"坐下"seat oneself be seated =sit down,如:Sit down ,please.= Please be seated. 也可以解作"能容纳...人":this plane sits 200passengers" *