sometimes一般放在什么位置

　　Sometimes you feel better for a good weep.

　　有时候你痛痛快快哭上一场就会觉得好受些。

　　Sometimes I go by car.

　　有时我坐车去。

　　Sometimes I pay, sometimes he pays ─ it seems to average out.

　　有时我付钱，有时他付钱——看来两相持平。