be used to do = be uesd for sth /doing sth å¯ä»¥è¡¨ç¤ºâ被ç¨æ¥â¦â¦ï¼è¡¨ç®çï¼âï¼ç¨æ³ç¸ä¼¼ï¼ä½æ¯åè åé¢æ¥å¨è¯ï¼åè å åè¯æå¨åè¯
The knife is used to cut apples. = The knife is used for cutting apples.
used to do sth è¿å»å¸¸åæäº[注æï¼ä¸ç¨be]
be used to doing sth.ä¹ æ¯äºåæäº