need和must有什么区别? 请讲讲must和need 的区别，详细
must\u4e0eneed\u7684\u533a\u522bA:
Must \u5fc5\u987b,\u5e94\u8be5,\u4e00\u5b9a,\u51c6\u662f, \u8868\u793a\u8bf4\u8bdd\u4eba\u8ba4\u4e3a\u6709\u5fc5\u8981\u505a\u67d0\u4e8b, \u547d\u4ee4, \u8981\u6c42\u522b\u4eba\u505a\u67d0\u4e8b\u4ee5\u53ca\u5bf9\u4e8b\u7269\u7684\u63a8\u6d4b\u3002
must \u7528\u6765\u6307\u4e00\u822c\u73b0\u5728\u65f6\u548c\u4e00\u822c\u5c06\u6765\u65f6, \u8fc7\u53bb\u5f0f\u53ef\u7528 have to \u7684\u8fc7\u53bb\u5f0f\u4ee3\u66ff\u3002
I must finish my work today.
\u6211\u4eca\u5929\u5fc5\u987b\u5b8c\u6210\u6211\u7684\u5de5\u4f5c\u3002
You mustn't work all the time.
\u4f60\u4e0d\u80fd\u8001\u662f\u5de5\u4f5c\u3002
Must I return the book tomorrow?
\u6211\u5fc5\u987b\u660e\u5929\u8fd8\u4e66\u5417?
After such a long walk, you must be tired.
\u8d70\u4e86\u8fd9\u4e48\u957f\u7684\u8def,\u4f60\u4e00\u5b9a\u56f0\u4e86\u3002
He must be the man I am looking for.
\u4ed6\u4e00\u5b9a\u662f\u6211\u8981\u627e\u7684\u4eba\u3002
He had to go because of somebody's calling
him that day.
\u90a3\u5929\u4ed6\u8981\u8d70\u662f\u56e0\u4e3a\u6709\u4eba\u53eb\u4ed6\u3002
must + have + \u8fc7\u53bb\u5206\u8bcd,\u8868\u793a\u73b0\u5728\u5bf9\u8fc7\u53bb\u4e8b\u7269\u7684\u63a8\u6d4b\u3002
He must have told my parents about it.
\u4ed6\u4e00\u5b9a\u628a\u8fd9\u4ef6\u4e8b\u60c5\u544a\u8bc9\u6211\u7236\u6bcd\u4eb2\u4e86\u3002
He must have received my letter now.
\u4ed6\u73b0\u5728\u4e00\u5b9a\u6536\u5230\u6211\u7684\u4fe1\u4e86\u3002
It's six o'clock already, we must have been late again.
\u5df2\u7ecf\u516d\u70b9\u949f\u4e86\uff0c\u6211\u4eec\u4e00\u5b9a\u53c8\u8fdf\u5230\u4e86\u3002
must \u548c have to \u7684\u533a\u522b: must \u8868\u793a\u8bf4\u8bdd\u4eba\u7684\u4e3b\u89c2\u601d\u60f3, have to \u8868\u793a\u5ba2\u89c2\u9700\u8981\u3002
You must do it now.
\u4f60\u5fc5\u9700\u73b0\u5728\u5c31\u5e72\u3002(\u8bf4\u8bdd\u4eba\u8ba4\u4e3a\u5fc5\u987b\u73b0\u5728\u5e72)
I have to go now.
\u6211\u5f97\u8d70\u4e86\u3002(\u5ba2\u89c2\u6761\u4ef6\u5fc5\u987b\u73b0\u5728\u8d70)
need \u9700\u8981 \u591a\u7528\u5728\u5426\u5b9a\u5f0f\u6216\u7591\u95ee\u53e5\u4e2d.
Need I attend the meeting tomorrow?
\u6211\u9700\u8981\u660e\u5929\u53c2\u52a0\u4f1a\u8bae\u5417?
You need not hand in the paper this week.
\u8fd9\u4e00\u5468\u4f60\u4e0d\u5fc5\u4ea4\u8bba\u6587\u3002
need \u662f\u4e00\u4e2a\u60c5\u6001\u52a8\u8bcd, \u4ed6\u7684\u7528\u6cd5\u5b8c\u5168\u548c\u5176\u4ed6\u60c5\u6001\u52a8\u8bcd\u4e00\u6837, \u4f46 need \u8fd8\u53ef\u5f53\u4f5c\u5b9e\u4e49\u52a8\u8bcd\u4f7f\u7528, \u8fd9\u65f6 need \u5c31\u8c61\u5176\u4ed6\u52a8\u8bcd\u4e00\u6837,\u6709\u7b2c\u4e09\u4eba\u79f0,\u5355\u590d\u6570, \u540e\u9762\u52a0\u5e26 to \u7684\u52a8\u8bcd\u7b49\u7279\u6027\u3002
I need a bike to go to school.
\u6211\u4e0a\u5b66\u9700\u8981\u4e00\u8f86\u81ea\u884c\u8f66\u3002
Do you need a dictionary?
\u4f60\u9700\u8981\u8bcd\u5178\u5417?
She needs a necklace.
\u5979\u9700\u8981\u4e00\u6761\u9879\u94fe\u3002
needn't + have + \u8fc7\u53bb\u5206\u8bcd \u8868\u793a\u8fc7\u53bb\u505a\u4e86\u6ca1\u5fc5\u8981\u505a\u7684\u4e8b\u60c5\u3002
You needn't have taken it seriously.
\u8fd9\u4ef6\u4e8b\u60c5\u4f60\u4e0d\u5fc5\u592a\u8ba4\u771f\u3002
dare \u6562 \u591a\u7528\u5728\u5426\u5b9a\u6216\u7591\u95ee\u53e5\u4e2d\u3002
The little girl dare not speak in public.
\u5c0f\u5973\u5b69\u4e0d\u6562\u5728\u516c\u4f17\u9762\u524d\u8bf4\u8bdd\u3002
Dare you catch the little cat?
\u4f60\u6562\u6293\u5c0f\u732b\u5417?
must\u5fc5\u987b \u7528\u6cd5\u4e3amust do sth
need\u9700\u8981 \u4f5c\u4e3a\u5b9e\u610f\u52a8\u8bcd\u7528\u6cd5\u662fneed to do \u4f5c\u4e3a\u60c5\u6001\u52a8\u8bcd\u662fneed do\uff08\u4f5c\u4e3a\u60c5\u6001\u52a8\u8bcd\u53ea\u7528\u4e8e\u7591\u95ee\u53e5\u548c\u5426\u5b9a\u53e5\uff09\u4e24\u8005must\u8bed\u6c14\u66f4\u4e3a\u5f3a\u70c8
\u53e6\u7528need\u63d0\u95ee\u65f6 \u7528need\uff08not)\u56de\u7b54
\u7528must\u63d0\u95ee\u65f6 \u4f5c\u80af\u5b9a\u56de\u7b54\u7528must
\u505a\u5426\u5b9a\u56de\u7b54\u7528needn't\uff08\u5f53\u5426\u5b9a\u56de\u7b54\u5305\u542b\u7981\u6b62\u542b\u4e49\u65f6\u7528musn't \u8868\u8bf7\u6c42\u65f6\u4e5f\u662f\u5982\u6b64\uff09
\u5982\uff1a\u6211\u53ef\u4ee5\u5728\u8fd9\u62cd\u7167\u5417 \u4e0d\u8fd9\u7981\u6b62\u62cd\u7167
Can I take some photos here? No you mustn't
not＋do。当它做实义动词时其结构则为need＋to
do,此时其否定为（do,does,did）＋need＋to
do
再说must它只能做情态动词，气候只能接动词原形作为它的宾语，表示表示含义为＂必须＂，而need做情态动词表示的含义为＂需要＂可见must的语气比need要强烈的多。
need是需要
must是必须要 两者语气强调不同
也有语法上的差别
need不是情态动词一般跟to do
而must是情态动词一般跟do(情态动词加动词原形）
A:
Must
必须,应该,一定,准是,
表示说话人认为有必要做某事,
命令,
要求别人做某事以及对事物的推测。
must
用来指一般现在时和一般将来时,
过去式可用
have
to
的过去式代替。
I
must
finish
my
work
today.
我今天必须完成我的工作。
You
mustn't
work
all
the
time.
你不能老是工作。
Must
I
return
the
book
tomorrow?
我必须明天还书吗?
After
such
a
long
walk,
you
must
be
tired.
走了这么长的路,你一定困了。
He
must
be
the
man
I
am
looking
for.
他一定是我要找的人。
He
had
to
go
because
of
somebody's
calling
him
that
day.
那天他要走是因为有人叫他。
must
+
have
+
过去分词,表示现在对过去事物的推测。
He
must
have
told
my
parents
about
it.
他一定把这件事情告诉我父母亲了。
He
must
have
received
my
letter
now.
他现在一定收到我的信了。
It's
six
o'clock
already,
we
must
have
been
late
again.
已经六点钟了，我们一定又迟到了。
must
和
have
to
的区别:
must
表示说话人的主观思想,
have
to
表示客观需要。
You
must
do
it
now.
你必需现在就干。(说话人认为必须现在干)
I
have
to
go
now.
我得走了。(客观条件必须现在走)
need
需要
多用在否定式或疑问句中.
Need
I
attend
the
meeting
tomorrow?
我需要明天参加会议吗?
You
need
not
hand
in
the
paper
this
week.
这一周你不必交论文。
need
是一个情态动词,
他的用法完全和其他情态动词一样,
但
need
还可当作实义动词使用,
这时
need
就象其他动词一样,有第三人称,单复数,
后面加带
to
的动词等特性。
I
need
a
bike
to
go
to
school.
我上学需要一辆自行车。
Do
you
need
a
dictionary?
你需要词典吗?
She
needs
a
necklace.
她需要一条项链。
needn't
+
have
+
过去分词
表示过去做了没必要做的事情。
You
needn't
have
taken
it
seriously.
这件事情你不必太认真。
dare
敢
多用在否定或疑问句中。
The
little
girl
dare
not
speak
in
public.
小女孩不敢在公众面前说话。
Dare
you
catch
the
little
cat?
你敢抓小猫吗?
两者都是情态动词
都可以跟动词原型
区别：
一个
可以从意思上来看
need：需要
must：必须
可以说
我需要吃东西（I
need
eat
something）
我必须做作业（I
must
do
homework）
看出区别了吗？一个是自己任务有必要做
另一个是由于某种原因不得不
第二
need也可以做一般的动词用
比如我需要钱
I
need
some
money。
房间需要打扫
The
room
needs
to
cleaning。（need
to+动词的ing形式，可以表示被动）
第三
两者加not之后的否定形式：一个是needn't
（不需要
）一个是mustn't（不得，表示禁止）
Good
luck
need 是需要 比较被动
must 是必须 主动，而且语气更重啊～
绛旓細涓銆佺敤娉曚笉鍚 1銆must 蹇呴』銆佸簲璇ャ佷竴瀹氥佸噯鏄,琛ㄧず璇磋瘽浜鸿涓烘湁蹇呰鍋氭煇浜嬨佸懡浠ゃ佽姹傚埆浜哄仛鏌愪簨浠ュ強瀵逛簨鐗╃殑鎺ㄦ祴銆2銆need "闇瑕"锛岃〃绀烘湁闇瑕佸拰蹇呰鍘诲仛鏌愪簨銆俷eed鍋氭儏鎬佸姩璇嶆椂涓昏鐢ㄤ簬鐤戦棶鍙ワ紝鍚﹀畾鍙ャ備簩銆佸弽涔夎瘝鐢ㄦ硶涓嶅悓 1銆乵ust not 琛ㄧず绂佹锛屾槸璇磋瘽浜哄己鏈夊姏鐨勫姖鍛婃垨鍛戒护锛屾剰涓衡滀竴瀹氳锛屼笉...
绛旓細1. 閲婁箟鍖哄埆锛- "Must" 琛ㄧず蹇呴』銆佸簲褰锛屽己璋冨熀浜庤鍒欍佷箟鍔°佸懡浠ゆ垨閫昏緫鐨勫繀鐒舵с- "Need" 琛ㄧず闇瑕併侀渶姹锛屽己璋冩弧瓒虫煇绉嶈姹傛垨杈惧埌鏌愮鐩殑銆備緥鍙ワ細- You must follow the rules of the organization. (浣犲繀椤婚伒瀹堢粍缁囩殑瑙勫畾銆)- I need to buy groceries for dinner tonight. (鎴戦渶瑕佷拱鏉傝揣鍋...
绛旓細涓銆佺敤娉曚笉鍚 1.must 鐢ㄦ硶锛歮ust鍚庨潰鍙兘璺熷姩璇锛屽湪杩欓噷must璺焥hould锛寃ill绛変竴鏍凤紝閮芥槸涓涓姪鍔ㄨ瘝銆備緥鍙ワ細'You must be Emma,' said the visitor.鏉ュ璇达細鈥滀綘鑲畾鏄焹鐜涖傗2.must be 閲婁箟锛歮ust be鍚庨潰璺熷悕璇嶆垨褰㈠璇嶏紝鎴栬呭璇粠鍙ワ紝骞舵病鏈夎姘斿己寮辩殑鎰忔濄備緥鍙ワ細He must be either mad or...
绛旓細"Must"鍜"need"鏄袱涓〃绀哄繀瑕佹ф垨闇姹傜殑鍔ㄨ瘝锛浣嗗畠浠湪鐢ㄦ硶鍜屽惈涔変笂鏈変竴浜涘尯鍒銆1. "Must"鏄敤鏉ヨ〃杈惧己鐑堢殑涔夊姟銆佽矗浠绘垨蹇呰鎬銆傚畠琛ㄧず鏌愪欢浜嬫垨鏌愮琛屼负鏄繀椤荤殑锛屾病鏈夊叾浠栭夋嫨鎴栬嚜鐢便傚畠甯稿父鐢ㄤ簬寮鸿皟瑙勫垯銆佹硶寰嬫垨閬撳痉涓婄殑涔夊姟銆備緥濡傦細"I must finish my homework before I can go out."锛堟垜蹇呴』...
绛旓細鍖哄埆涓锛氳娉曚笉鍚 must鏄竴绉嶆儏鎬佸姩璇锛岃〃绀虹‘淇°佹帹娴嬫垨蹇呰鎬э紝鍙湁涓绉嶅舰寮忥紝涓嶅彉鍖栥傝宯eed鏄疄涔夊姩璇嶅拰鎯呮佸姩璇嶄袱鐢紝琛ㄧず闇瑕佹垨蹇呴渶锛屾湁涓嶅悓鐨勬椂鎬併佷汉绉板拰鏁扮殑鍙樺寲銆備緥鍙ワ細鈶營 must leave now. 鎴戠幇鍦ㄥ繀椤昏蛋浜嗐傗憽You need to finish your homework. 浣犻渶瑕佸畬鎴愪綘鐨勫搴綔涓氥傚尯鍒簩锛氱▼搴︿笂...
绛旓細鍖哄埆1: "must" 琛ㄧず寮虹儓鐨勪箟鍔℃垨蹇呰鎬,鑰 "need" 琛ㄧず闇姹傛垨蹇呰鎬х殑绋嬪害杈冭交銆 渚嬪瓙: 鎴戝繀椤诲幓涓婄彮銆 (I must go to work.) - 琛ㄧず寮虹儓鐨勪箟鍔℃垨蹇呰鎬с 鎴戦渶瑕佷竴鏉挅鍟℃潵鎻愮銆 (I need a cup of coffee to wake up.) - 琛ㄧず闇姹傛垨蹇呰鎬х殑绋嬪害杈冭交銆 鍖哄埆2: "must" 甯哥敤浜庤〃绀烘帹娴嬫垨鍋囪...
绛旓細缁撴瀯涓need锛媎o,姝ゆ椂瀹冪殑鍚﹀畾缁撴瀯涓簄eed not锛媎o銆傚綋瀹冨仛瀹炰箟鍔ㄨ瘝鏃跺叾缁撴瀯鍒欎负need锛媡o do,姝ゆ椂鍏跺惁瀹氫负锛坉o,does,did锛夛紜need锛媡o do 鍐嶈must瀹冨彧鑳藉仛鎯呮佸姩璇嶏紝姘斿欏彧鑳芥帴鍔ㄨ瘝鍘熷舰浣滀负瀹冪殑瀹捐锛岃〃绀鸿〃绀哄惈涔変负锛傚繀椤伙紓锛岃宯eed鍋氭儏鎬佸姩璇嶈〃绀虹殑鍚箟涓猴紓闇瑕侊紓鍙must鐨璇皵姣攏eed瑕佸己鐑堢殑澶氥
绛旓細need鏄渶瑕must鏄繀椤昏涓よ呰姘斿己璋冧笉鍚屼篃鏈夎娉曚笂鐨勫樊鍒玭eed涓嶆槸鎯呮佸姩璇嶄竴鑸窡todo鑰宮ust鏄儏鎬佸姩璇嶄竴鑸窡do(鎯呮佸姩璇嶅姞鍔ㄨ瘝鍘熷舰锛
绛旓細must鏄繀椤荤殑鎰忔,甯﹀懡浠ょ殑璇皵锛泂hould鏄簲璇,琛ㄧず寤鸿锛沜an鏄兘澶,琛ㄨ兘鍔涗絾涓嶄竴瀹氭槸浜嬪疄,need鏄渶瑕.鎴戝啓鍑犱釜渚嬪彞鍚э細You must finish your homework before you go to play.浣犲繀椤诲畬鎴愪綔涓氬悗鎵嶈兘鍑哄幓鐜.You should tell him the truth.浣犲簲璇ュ憡璇変粬瀹炴儏.You can do it.浣犺兘澶熷仛鍒.We need light...
绛旓細2)must+be+琛ㄨ鐨勭粨鏋勮〃绀烘湁鎶婃彙鐨勬帹娴嬶紝浠栫殑鍚﹀畾鎴栫枒闂舰寮忕敤can浠ｆ浛must銆傚锛歍his must be your pen.need:1)琛ㄧず鈥滈渶瑕佲濇垨鈥滃繀椤烩濓紝鍋氭儏鎬佸姩璇嶇敤鏃讹紝浠呯敤浜庡惁瀹氬彞鎴栫枒闂彞銆傚湪鑲畾鍙ヤ腑涓鑸敤must, have to, ought to 鎴杝hould 浠ｆ浛銆傚 -Need I finish the work today?-Yes, you must....
