need是情态动词时,后加动词原形。need后接动名词,一般用于被动态,如:My car needs repairing.这句话如果不用动名词,就得用不定式的被动态,My car needs to be repaired.PS:used to do sth表示曾经干过某事。如:I used to work in the factory. be used to doing sth表示习惯于干某事。如:I am used to having a bath in the moring.希望能偶帮得到你O(∩_∩)O
请采纳。