used-to-用法及练习1页.doc

used to 用法【例】My uncle used to go to work on foot. 我叔叔过去常常步行去上班。总结：used to意为“过去常常”, 暗指现在已经不存在的动作或状态, 后接动词原形。句式【练习】按要求改写句子。1. I used to be afraid of the snakes. (改为否定句)I to be afraid of the snakes. 2. He used to be really friendly. (改为一般疑问句) he to be really friendly?3. Did you use to play soccer after school?(作否定回答)No, .4. I used to go to school by bus. (对划线部分提问) you to go to school?5.