最线是 Common Writing Mistakes(2) Run-together and comma-spliced sentences o My back hurts it is weak. (Revised)My back hurts because it is weak. o My back hurts,it is weak. (Revised)My back hurts,for it is weak. 6Common Writing Mistakes (2) ◼ Run-together and comma-spliced sentences  My back hurts it is weak.  (Revised) My back hurts because it is weak.  My back hurts, it is weak.  (Revised) My back hurts, for it is weak. 6