tiankongch
need doing=need to be done，主动表被动。类似用法还有want, require等。例：The flowers need watering. = The flowers need to be watered.花要浇水了。need to do 需要做某事延伸：need do 需要做某事，这里need 是情态动词，没有人称变化，后边的动词前没有to。need to do也是需要做某事，但need 是行为动词，有人称变化，后面的动词要用不定式。例：He need water the flowers. = He needs to water the flowers. 他要给花浇水了。 如果满意请采纳为最佳答案，谢谢啦！
：小小的菇凉
require to be done需要被做双语对照例句:1.But there is still much work to be done. 尽管如此，警署仍然面临大量待做的工作。 2.Some countries even require that a foreign firm be "invited" before their personnel arepermitted to cross the borders-this is done regardless of who is buying or selling. 有些国家甚至要求外国公司入境之前，应该受到要求---不论是买方还是卖方。 3.You know what needs to be done, and not afraid to make the decisions. 2.你知道该采取什么行动而且不惧做出决定
娜是阵疯
need doing 指需要被做，如： The bike needs repairing.need to do 指的是主语需要去做某事，you need to bring sth with you when you do the work.
垚垚姐姐。
需要被做某事，通常以事物作主语。例句：The room requires to be cleaned.房间需要被打扫。注：require doing 是用动名词形式表示被动意义，表示需要被做某事，与require to be done意思相同。The mechine requires fixing.机器需要被修理。The room requires cleaning.房间需要被打扫。
优质英语培训问答知识库
