句型转换。 1.You need to change your mind .(对画线部分提问) ___ ___ I need to___? 2. Sara couldn't catch his. words because he spoke too quickly. (对画线部分提问) ___ ___Sara ___his words? 3.I learned to write my own original sentences by using grammar .(对画线部分提问) ___ ___you ___to write your own original sentences? 4.I don't know how I should use commas.(改为同义句) I don't know ___ ___ ___commas. 5. Why don't you ask your teacher for help when you are in trouble?(改为同义句) ___ ___ ask your teacher for help when you are in trouble?