need v.做实意动词时，有两种用法：1.need to do sth.需要做某事 e.g I need to study hard for th exam.我需要为了考试努力学习。He needed to drink some water.他需要喝些水。2.need doing sth. 需要被做某事（=need to be done sth.）e.g The flowers need watering every day.花...