need doing 和need to be done 的区别

1.need to 作情态动词,有need do ,相当于need to do,通常用于疑问句、否定句、条件句、 whether(if) 名词从句或含否定意义的句子中.如：
I do not see why we need discuss it further.
我看我们没有必要讨论下去了.
That's all settled.It needn't be talked about.
那已全部解决了,没有必要再说了.
He asked me whether he need attend the meeting?
他问我他是否有必要出席这次会议?
2.need 又是实义动词,各种变化和用法与普通实义动词相同.有need to do ,表示“需要去做什么（还未做）”
如：
They need a rest after a long walk.
长距离行走后他们需要休息一下.
I need you to work for me,young man!
小伙子,我需要你为工作.
3.need 接动名词主动形式,表示被动意义、这时动名词和主语之间有动宾关系,释为“…需要/有必要被…”,need doing 可转换为 need to be done 结构,意思相同.如：
My hair needs washing badly.(= My hair needs to be washed badly.)
我的头发非常需要洗一洗.
The garden needs watering.(=The garden needs to be watered.)
花园需要浇水.

第一个是需要某些东西 比如:i need an apple to eat
第二个是需要去做某件事 比如:i need playing basketball to relax myself

你问的问题有点不明确.总的来说.need,want,require 做"需要"讲时接动名词的主动式等于不定式的被动式.如"
The house needs /wants/requires cleaning.=The house needs /wants/requires to be cleaned.这房子需要打扫了.

1. need to 作情态动词,有need do ,相当于need to do,通常用于疑问句、否定句、条件句、 whether(if) 名词从句或含否定意义的句子中. 如： I do not see why we need discuss it further. 我看我们没有必要讨论...

need doing = need to be done
如果是need being done ,那这个语法就重复了.就错了!

1.need to 作情态动词,通常用于疑问句、否定句、条件句、 whether(if) 名词从句或含否定意义的句子中.如：
I do not see why we need discuss it further.
我看我们没有必要讨论下去了.
That's all settled.It needn't be talked about.
那已全部解决了,没有必要再说了.
He asked me whether he need attend the meeting?
他问我他是否有必要出席这次会议?
2.need 又是实义动词,各种变化和用法与普通实义动词相同.如：
They need a rest after a long walk.
长距离行走后他们需要休息一下.
I need you to work for me,young man!
小伙子,我需要你为工作.
3.need 接动名词主动形式,表示被动意义、这时动名词和主语之间有动宾关系,need doing 可转换为 need to be done 结构,意思相同.如：
My hair needs washing badly.(= My hair needs to be washed badly.)
我的头发非常需要洗一洗.
The garden needs watering.(=The garden needs to be watered.)
花园需要浇水.
7回答者：moonhunters

1、need to do sth 需要做某事 例：You don't need to have the bike repaired right away.你不必马上去修车.2、need 作情态动词,后面直接接动词原形 need do sth“需要做某事” I need do my homework right now.我要马上做作业了.3、need doing = need to be done 需要……被做,这两短语没有什么区别 例：The room needs cleaning = The room needs to be cleaned.房间需要打扫了.

1.need to 作情态动词,通常用于疑问句、否定句、条件句、 whether(if) 名词从句或含否定意义的句子中.如：
I do not see why we need discuss it further.
我看我们没有必要讨论下去了.
That's all settled.It needn't be talked about.
那已全部解决了,没有必要再说了.
He asked me whether he need attend the meeting?
他问我他是否有必要出席这次会议?
2.need 又是实义动词,各种变化和用法与普通实义动词相同.如：
They need a rest after a long walk.
长距离行走后他们需要休息一下.
I need you to work for me,young man!
小伙子,我需要你为工作.
3.need 接动名词主动形式,表示被动意义、这时动名词和主语之间有动宾关系,need doing 可转换为 need to be done 结构,意思相同.如：
My hair needs washing badly.(= My hair needs to be washed badly.)
我的头发非常需要洗一洗.
The garden needs watering.(=The garden needs to be watered.)
花园需要浇水.

实意.情态动词后跟动词原型

这个我们老师有讲过的
need的用法
　　1.need作实义动词,意为“需要”.如：
　　　Do you need to stay at home?　　　你要呆在家里吗?
　　2.need作情态动词,一般用于对must的否定回答.如：
　　　---Must he leave now?　　他必须离开吗?
　　　---No,he needn't.　　　　不,他不必.
　　3.区分：
　　　a.need作实义动词.
　　　　He needs to go.
　　　　He doesn't need to go.
　　　　Does he need to go?
　　　　Yes,he does./No,he doesn't.
　　　b.need作情态动词,一般不用于肯定句.
　　　　He needn't go.
　　　　Need he go?
　　　　Yes,he need./No,he needn't.

He has been in practice for twenty years.
他已有20年的实践经验.
We need to do something to relax.
我们需要做些事情来放松放松.
It has many works to need doing.
有很多事情需要去做.
希望能够帮到你!

需要去做
need 需要
doing 做
上面这个答案

need to do 和need doing 一样,这里的need 是实意动词
但B选项中,need是当情态动词用了,应改为doesn‘t need to be answered

if和whether的区别：
1 在动词不定式之前只能用whether .如：
例8 I can’t decide whether to stay.我不能决定是否留下.
2 在whether …… or not 的固定搭配中.如：
例9 I want to know whether it’s good news or not .我想知道是否是好消息.
3 在介词后,只能用whether.如：
例10 His father is worried about whether he lose his work .他的父亲担心是否会失去工作.
4宾语从句放在句首表示强调时,只能用whether .如：
例11 Whether they can finish the work on time is still a problem .他们是否能准时完成这项工作还是个问题.
5用if会引起歧义时,只用whether.如：
例12 Could you tell me if you know the answer
这句话有两种意思：“你能告诉我是否知道答案吗?”或“如果你知道答案,请告诉我,好吗?”.如用whether可避免歧义.
need to do 和need doing的用法
need to do (需要做……)表示主动语态,主语为人.
need doing(需要被做)表示被动语态[相当于need to be done],主语为物.
过去完成时：过去完成时表示到过去某一时间之前已经完成或结束的动作或状态,也就是"过去的过去".过去（更早）发生的事或状态对过去（晚）所产生的影响.