否定句为didn't use to或used not to。2)be used to do sth ＝be used for doing sth 被用来做某事(3)be used to doing sth 主语是人时，其意为"习惯、适应某事/做某事".习惯于做美式：didn't use to didn't 后接动词原形，used to 一定要恢复原形！英式：usen't to / usedn't to 均可.
●０● use 的用法3:used to 仅用于一般过去时，表示过去常常发生的事，否定式为used not to 或did not use to。use 的用法4:used to 是情态动词，只有过去式，表示过去存在的但9. (与否定词连用)无需说，不必说You use need in expressions such as I need hardly say and I needn't add to emphasize that the person you are talking to already knows what you are goin
(1)used to do意思是“过去是”“过去常常”，暗含现在已不是这样了之意。这里的used只能用过去时，不能用其他任何时态。其否定形式为usen't这个短语含有今昔对比之意，其否定形式常用used not to 或didn't use to。反意疑问句中应该用did/didn't 或used/usedn't。例如：I used to swim in this river when I wa
3 3.辨析：1)used to do sth. "过去常常做某事" to 后加动词原形，否定句为didn't use to或used not toeg: I used to take a walk after supper every night. (我过去常常在n.用错，滥用；误用者vt.把…派作不正当的用途；虐待；滥用The effectiveness of this class of drug has, however, led to their misuse.不过，此类药品的显著
could use sth (informal) 恨不得；巴不得；非常想used to say that you would like to have sth very much use your head (informal) 你动动脑子；你仔细想想used to tell sb t1. 前缀ab表示否定use v.使用——abuse v.滥用normal adj.正常——abnormal adj.不正常的present adj.——absent adj.缺席abandon v.放弃(abandon oneself
