need do need to do need doing有什么区别吗，别讲的太深 need do need to do need doing有...

need to do\u548cneed doing\u7684\u533a\u522b

need to do \u8868\u793a\u4e3b\u8bed\u4e0eneed\u8fd9\u4e2a\u52a8\u4f5c\u662f\u4e3b\u52a8\u5173\u7cfb\uff0c\r\n\u5982\uff1aI need to go now.\u6211\u73b0\u5728\u9700\u8981\u79bb\u5f00\u4e86\u3002\r\n\u800cneed doing sth\u8868\u793a\u4e3b\u8bed\u4e0eneed\u8fd9\u4e2a\u52a8\u4f5c\u662f\u88ab\u52a8\u5173\u7cfb\uff0c\r\n\u4f8b\u5982\uff1aThe windows need cleaning.\u7a97\u6237\u9700\u8981\u6e05\u626b\u3002

\u7b80\u5355\u521d\u7ea7\u7684\u8bb2\uff1a
need
to
do
\u9700\u8981\u505a\u67d0\u4e8b
need
doing
\u662f\u9700\u8981\u88ab\u505a\u6709\u88ab\u52a8\u7684\u610f\u601d
\u5982;i
need
to
wash
my
clothes.
my
clothes
need
washing.
need
doing
=
need
to
be
done
i
need
to
mend
my
bike.
my
bike
needs
mending.
\u5177\u4f53\u7684\u8bf4\uff1a
need
to
do
sth\u5b9e\u4e49\u52a8\u8bcd
need
doing
sth\uff0c\u8868\u793a\u88ab\u52a8
\u4eba\uff0bneed
\uff0bto
do
\u7269\uff0bneed
\uff0bdoing
\u7269\uff0bneed
\uff0bto
be
done
\u8bf7\u770b\u4e0b\u9762\u7684\u4f8b\u5b50\uff1a
1\uff0ewe
need
to
collect
the
parcel
before
we
leave
for
england\uff0e\u53bb\u82f1\u56fd\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u6536\u62fe\u597d\u884c\u674e\u3002
2\uff0ewe
need
to
tell
him
the
truth\uff0e\u6211\u4eec\u9700\u8981\u544a\u8bc9\u4ed6\u771f\u76f8\u3002
3\uff0emy
car
needs
repairing\uff0e\u6211\u7684\u6c7d\u8f66\u9700\u8981\u4fee\u7406\u3002

1. need do中的need为情态动词，此时的need没有人称、数以及时态的变化，且通常用于疑问句和否定句中。例如：

   Need you go right away? 你需要马上动身吗？

   We needn't finish our homework in one day. 我们不必一天内就做完作业。

2. need to do中的need是行为动词，need有人称、数以及时态的变化，句子的主语和do在逻辑上是主谓关系，即do这个动作是句子的主语发出来的。例如：

   He needs to go home now. 现在他需要回家。

   I need to buy a basketball. 我需要买个篮球。

3. need doing中的need是行为动词，need有人称、数以及时态的变化，句子的主语和doing在逻辑上是动宾关系，即主语是do这个动作的承受者。例如：

   My desk needs mopping. 我的桌子需要抹一抹。

   Does this bike need fixing？这辆自行车需要修一修吗？

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。

need do中的need是情态动词，情态动词直接＋do。
need to do中的need是动词。

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