比较need和dare
情态动词用法归纳总结
情态动词用法辨析情态动词用法can could may might will would be able to shall should ought to must have to had better need dare表能力表请求表许可表意愿表建议表义务表推测表需求表敢不敢一、情态动词表能力时：1、can 和could二者的相似之处在于：二者皆可指因本身的特质或客观条件的存在，主语可能能够完成某事，强调的是主语具备某种能力，而非真实去执行某个动作。
二者的不同之处在于：can 对应现在或将来，而could 对应过去。
2、be able to 和couldcould 表示过去具备某种能力，强调再过去有完成某件事的可能性，而不一定真正去实行。
当be able to 应用于过去时，was/were able to 表示过去某次具体的行为，强调在过去成功完成了某事。
二、情态动词表请求时：1、此时could ，might ，would 并不表示过去，而是在语气上比原型更加委婉客气。
2、当用第一人称提出请求时，常用can/could 和may/might 。
相较而言，could 与may在表请求的问句中出现的频率最高；might表发请求的语气最为委婉客气，因此反而很少见；而can则常用于熟人间的对话中。
语气强度：can>could/might>might3、当用第二人称提出请求时，常用can/could和will/would。
其中could和would 表达请求的语气更委婉客气；而can与will则常用于熟人对话中。
语气强度：can/will>could/would三、情态动词表许可时：1、与表请求不同，will/would不论前接第几人称，都表示主语本身的意愿，无需得到他人的“许可”，所以will/would不可以用于表请求的句中。
2、can和may二者都可以表示对现在或将来动作的许可，其中can的使用频率更高。
Need和dare的用法小结和练习含答案
Need/Dare的用法与练习（含答案）Need的用法1. need作情态动词need作情态动词用时，主要用于否定句和疑问句中，形式为need not＋原形动词。
(need 辅助后面实义动词，有一定的词义，但不能独立使用)例：宾语+ 状语注意用need 提问时，肯定回答为must，否定回答为needn’t或don’t have to。
例：—Need I finish the work today? （need助动词）—Yes, you must .是的。
—No. you needn’t /don’t have to. 不，你不必。
2. need作实义动词作实义动词，need和普通动词一样，有人称、数和时态的变化，后接名词、代词、不定式或动名词做宾语，可用于任何句子。
need肯定陈述句中独立做谓语，而疑问和否定则要借助于do构成。
如：Do you need a dictionary? 你需要词典吗?1）如果主语是人，句型如下：sb. need(s) sth. 某人需要某物sb. need to do sth. 某人需要去做某事例：I need to pass the exam. 我需要通过这次考试。
He needs to learn English .他需要学习英语。
You need my help.主语+2）如果主语为某物某物需要某种方法处理时，need之后可接不定式短语，但一定为被动语态；也接doing，但一定为主动语态。
句型如下：Sth. need doing 某事需要被做= need to be done特别注意两点：①.主动形式的动名词doing具有被动的含义；也接动名词，但一定为主动语态。
②.该动名词可以改为其动词不定式的被动形式而句子的意义不变。
例如：.例：The flowers need watering.= The flowers need to be watered. 这些花需要浇水。
dare用法总结大全(汇编5篇)
dare用法总结大全（汇编5篇）dare用法总结大全第1篇dare的意思敢；敢做；激（某人做某事）；问（某人）有没有胆识（做某事）；敢；敢于；大胆；无畏于；敢，竟敢；dare的用法用作实义动词其意为“敢于”，可以有各种词形变化，可用于各类句型（确定句、否定句、疑问句等）。
如：Do you dare to tell him？你敢告知他吗？He doesnt dare to 他不敢插嘴。
用作情态动词其意思为“敢”，后接动词原形，通常只用于否定句或疑问句以及if或whether之后，一般不用于确定句。
如：She darent come to see 她不敢来见你。
Dare you say that to the boss？你敢向上司说这种话吗？I dont know whether he dare 我不知他是否敢试一试。
混合用法有时dare的实义动词用法和情态动词用法会混在一起，显现一些混合结构，这种用法尤其显现在否定句和疑问句中。
如：Did he dare tell her？他敢告知她吗？He didnt dare open his 他不敢把眼睛睁开。
第一句由于在句首使用了助动词did，说明句中的dare为实义动词，那么后面接另一动词时就应用带to不定式，所以它的“正确”表达应是：Did he dare to tell her？第二句由于在dare前使用了助动词didnt，说明其中的dare为实义动词，所以当后接另一动词时应当用带to不定式，所以这一句的“正确”表达应是：He didnt dare to open his这样的用法尽管我们阅读中可能会碰到，但最好不要仿照，由于假如考试中用它有可能会被判定为错误噢!I dare say前面我们讲过，dare用作情态动词通常不用于确定句，但是I dare say是个例外，并且它已成为一个习惯说法，用于表示一种不愿定的语气，它的意思是“很可能”“大约”“我想”等。
need的用法
Need的用法1. need 是英语中两个比较特殊的动词之一（另一个是dare），既是及物动词又是情态动词。
作情态动词用多见于英国英语中，而且仅用在否定句和疑问句中。
如：2. need 作情态助动词通常不用在肯定句中（*He need go now.）, 但在表示怀疑或否定概念的主句之后的宾语分句里或主语分句里，可以用情态助动词的肯定形式。
如：I don’t think you/ he need go just yet.I wonder if we need take sleeping-bags.The only thing you need to do is (to) fill in this form.(=You don’t need to do anything else。
)All you need do is to take a taxi from the airport.情态动词need的肯定式主要用在正式文体中。
在非正式文体中，need 作及物动词用也许更普遍。
如：I wonder if we need to take sleeping-bags.I don’t think he needs to go just yet.The only thing you need to do is (to) fill in this form.3. need 没有过去、现在的时态区别。
如果要表示过去时间可用“needhave + -ed分词”的结构。
如：Need you have told him about my plans?You needn’t have told him about my plan.据CGoEL, You need not have done it. 几乎等于You did not need to do it. 但是，need have+-ed 分词结构隐含有与事实相反的意思，need to 的结构则没有。
情态动词need的用法汇总
need”的用法及其区别“need”既可以作,也可以作,但是它们的用法不同;作为的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相同：在词组中总是位居第一,没有非限定形式,即没有、-ing分词或-ed分词等形式；现在时没有词形变化；情态动词之间是相互排斥的,即在一个词组中只能有一个情态动词;下面是“need”作为情态动词的用法：一、need表示“需要”或“必须”,通常用于和疑问句;例如：1．You needn't do it again．你不需要再做了;2．He needn't worry about it．这件事他无需担心;3．Need he do this homework first他需要先做这些作业吗4．Need they fill in the form他们需要填表吗二、在中,可以用need的否定形式＋完成体;例如：1．We needn't have worried．其实我们不必要慌;2．You needn't have mentioned it．你本来不必提起这件事;3．You needn't have said that when he asked．当他问的时候,你其实不必要说;三、needn't后的间或也能用或;例如：1．He needn't be standing in the rain．他不必要站;2．We needn't be waiting in this place．我们不必要在这儿等;3．The hedges needn't be trimmed thisweek．本周树蓠不必要整修;“need”作为时,通常用法是：人＋need ＋to do物＋need ＋doing物＋need ＋to be done另外,“need”后还可以直接跟名词;请看下面的例子：1．We need to collect the parcel before we leave for England．去英国之前,我们需要收拾好行李;2．We need to tell him the truth．我们需要告诉他真相;3．My car needs repairing．我的汽车需要修理;4．The flowers need watering．这些花需要浇水;5．His leather shoes needs to be mended．他的皮鞋需要修补;6．Her room needs cleaning．她的房间需要打扫;7．It is aquestion that needs very careful consideraton．这是一个需要慎重考虑的问题; 8．I need a watch．我需要一块手表;一、need 作情态动词：二、1不能单独作谓语, 只能和其他动词原形构成谓语；三、2在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前；疑问句中, 则在主语之前;四、3多用在否定句或疑问句中；五、4无人称和数的变化；六、5否定式构成是在后面加 "not";七、Need I attend the meeting tomorrow八、我需要明天参加会议吗九、You need not hand in the paper this week.十、这一周你不必交论文;十一、You didn't need to tell him the news; it just made him sad.十二、你无需告诉他这一消息, 那只会使他悲哀;十三、二、need作实义动词时： need 就像其他动词一样,有第三人称,单复数, 后面加带to 的动词等特性;十四、I need a bike to go to school.十五、我上学需要一辆自行车;十六、Do you need a dictionary 你需要词典吗十七、She needs a necklace.她需要一条项链;十八、needn't + have + 过去分词表示“过去做了没必要做的事情; ”十九、You needn't have taken it seriously.二十、这件事情你不必太认真;情态动词need的用法作为情态动词,need一般只用于否定句和疑问句中;You needn’t try to expla in. 你不需要解释;She needn’t come tomorrow. 她明天不必来;Need we stay here this evening 今晚我们需要在这儿住下来吗Need 作为实意动词比作为情态动词常用的多;实意动词need 可用在所有句型中;She needs to come tomorrow. 明天她需要来;You don’t need any help from others. 你不需要别人的任何帮助;He doesn’t need to borrow money. 他不需要借钱;Do they need this 他们需要这个吗Plants need sun light in order to grow. 植物需要阳光才能生长;You don’t need to work so hard. 你不需要这么样地努力工作;Your shoes need cleaning/to be cleaned. 你的鞋子需要清洁;The job doesn’t need much attention or time. 这份工作很省心省事;What he needs is a good beating. He needs a good beating. 需要好好揍他一顿need的用法■作情态动词：通常用在疑问句、否定句中,或与条件句、whether, hardly, nobody等连用;如：Need he go so soon他这么快就要走吗He needn’t go. 他不必走;If she wants anything, she need only ask. 她想要什麽, 只需说一声就行;He wondered whether they need go there. 他不知道他们是否需要去那里;Nobody need be afraid of catching the disease. 谁都不用害怕能得这种病.注意：1. 因 need 不能用于肯定句,因此肯定回答要用 must;如：—Need I stay here any longer 我需要在这呆下去吗—No, you needn’t. 不需要;—Yes, you must. 是的,需要呆下去;2. need have done 的否定式或疑问式,表示“本来不必做某事,但事实上却做了”;如：Sh e needn’t have come in person a call would have been enough. 她本不必亲自来——打个电话来就足可以了;Need you have paid so much你当时真须要付那麽多钱吗■作行为动词：可用于疑问句、否定句和肯定句;如：Does he need to go so soon他这么快就要走吗He doesn’t need to go. 他不需要走;They need our help. 他们需要我们帮助;注：作行为动词的need后可接动名词的主动式表示被动含义;如：The garden needs watering=to be watered . 花园该浇水了;■还可作名词：表示“需要, 必需, 必需品”等;如：The doctor told me I was in need of a good rest. 医生说我需要好好休息;There is no need for you to go. 你没有必要去;Our needs are modest. 我们的必需品是谦虚1. 基本用法特点need可用实意动词和情态动词,用作情态动词时,意思是“有必要”或“需要”,其后接动词原形,通常只用于否定句或疑问句以及if或whether之后,一般不用于肯定句;如：You needn‘t worry. 你不必担心;Why need you go today 为什么你需要今天走He wondered whether they need send a deposit. 他不知道他们是否得交定金;「注」1 由于用作情态动词的need通常不用于肯定句,所以对于以need开头的疑问句的否定回答可用nee dn‘t,但是肯定回答却不能用Yes, you need之类的,应根据具体情况改用其他表达;如："Need he stay here" "Yes, he must." “他有必要留在这儿吗”“是的,必须留在这儿;”2 need有时用于含有only, all 等表限制意义的肯定句中;如：This is the only form you need fill in. 你要填的只有这一张表;All you need do is to take a taxi from the airport. 你只需从机场打个的即可;2. 后接动词完成式的用法若要谈论过去情况,应在其后接动词完成式;如：You needn‘t have come in person. 你当时不必亲自来的;Need you have paid so much 你当时真需付那么多钱吗「注」1 在宾语从句中可直接用need表示过去也可用didn‘t have to;如：He said he need not didn‘t have to hurry. 他说他不必匆忙;2 注意对“need+have+过去分词”结构疑问式的回答;如："Need he have come so early" "Yes, he had to." / "No, he needn‘t have."“他来那么早有必要吗”“有必要,他必须来那么早;”/“不,他本来没有必要来那么早的;”3. 后接动词进行式的用法有时后接进行式表示动作正在进行;如：We needn‘t be standing here in the rain. 我们没有必要站在这里被雨淋;4. needn‘t have done与didn’t need to do前者主要表示某事已经做了,但后来觉得没必要去做,因此常含有责备或遗憾之意；后者则不具体表明某事是否做了即可能做了也可能没有做,此用法中的need为实意动词;如：I got up early, but I needn‘t have done so, because I had no work to do that morning. 我起床起得很早,但我本来不必起那么早的,因为我那天早上没什么事做;I didn‘t need to get up early this morning, so I stayed in be d until 9 am. 今天早上我不必早起,所以我一直睡到上午九点钟才起床;若没有特定的上下文,有时可能有歧义;如：I didn‘t need to go the office yesterday.1 我昨天无需去那儿;所以没去=I didn‘t have to go there yesterday.2 我昨天本来不必去那儿的;但我却去了=I needn‘t have gone there yesterday.need和dare的用法要点need和dare可用作实义动词和情态动词,用作实义动词时,后接动词要用不定式,有人称和数的变化,可用肯定句、否定句和疑问句；用作情态动词时,主要用于否定句和疑问句中,没有人称和数的变化,后接动词要用动词原形;如：You need not pay—it is free. 你不必付钱,这是免费的;We need to have lots of patience. 我们需要有很大的耐心;Who would dare to tell him 谁会敢告诉他He dared not go there at night. 晚上他不敢到那里去;How dare you ask me such a question 你怎么敢问我这样的问题注：need 表示“需要”,其后可接动名词,且要用主动形式表示被动意义;如：The room needs cleaning. 这房间需要打扫了;need表示“需要”或“必须”,通常用于否定句,疑问句,条件句;例如：1．You needn't do it again．你不需要重复做了;2．He needn't worry about it．这件事他无需担心;3．Need he do this homework first他需要先做这些作业吗4．Need they fill in the form他们需要填表吗二、在否定句中,可以用need的否定形式+不定式完成体;例如：1．We needn't have worried．其实我们不必担心;2．You needn't have mentioned it．你本来不必提起这件事;3．You needn't have said that when he asked．当他问的时候,你其实不必要说;三、needn't后的不定式间或也能用进行式或被动语态;例如：1．He needn't be standing in the rain．他不必要站在雨中;2．We needn't be waiting in this place．我们不必要在这儿等;3．The hedges needn't be trimmed this week．本周树蓠不必要整修;四、其一般疑问句的答语,肯定用must,否定用needn't;Need I go with her 我需要和她一起去吗Yes,you must. 是的,你需要去;No,you needn't. 不,你不必去;作实义动词主+need +to do主+need +doing =sth+need +to be done都是实义动词,注意其否定为主+don‘t/doesn't+need +to be done或主+needn’t +be done 例如：The room needs cleaning = The room needs to be cleaned. 房间需要打扫了;另外,“need”作实义动词时后还可以直接跟名词;请看下面的例子：It is a question that needs very careful consideration．这是一个需要慎重考虑的问题很简单的方法区别情态动词与实义动词：当need为情态动词时,意思是“必要”,否定为"needn't",后面大多接动词原形,表示动作；当need为实义动词时,意思是“需要”,否定为"don't need",后面大多跟名词;词汇搭配～+名词need clothes 需要衣服need education 需要受教育need food 需要食物need help 需要帮助need money 需要钱need rice 需要大米need water 需要水～+副词need critically 极为重要地需要need desperately 不顾一切地需要need directly 直接地需要need economically 经济上地需要need genuinely 真正地需要need horribly 惊人地需要need imperatively 紧急地需要need sorely 非常需要need spiritually 精神上需要need urgently 强烈地需要～+介词need for 为…而需要need in 在…需要词语辨析need,want这组词都有“需要,要求”的意思;其区别是：need表示因缺少而需要某物或需要做某事,尤其强调这种需要的迫切性； want表示从一般需要的意向到强烈、迫切的要求以及各种程度不同的愿望;need作情态动词的用法：need用作情态动词时表“必须必要”的意思,后直接跟动词原型,且need无人称、数的变化第三人称单数不加s,也没有非谓语形式不定式、分词;注意:need用作情态动词时常用于否定句和疑问句中;例：Need he bring his laptop tomorrow 明天他必须带他的笔记本过来吗Come on, you needn't worry about it becuse it's not your fault. 行啦,你不必担心的因为那不是你的错;She needn't have arrived so early, need she 她本不必到得这么早,不是吗注意:must引导的一般疑问句的否定回答必须使用needn't;例如：-Must I leave 我必须离开吗-No, you needn't. 不,你不必离开;二、need作实意动词的用法：1、need + something 需要某物例：I need some fruits to eat. 我需要些水果来吃;2、need to do something 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;3、need doing = need to be done 需要……例：The room needs cleaning = The room needs to be cleaned. 房间需要打扫了;4、need somebody to do something 需要某人做某事例：I need someone to help me out of this problem. 我需要找人来帮助我解决这个问题;三、need作名词的用法：need用作名词时,既可以是可数名词,也可以是不可数名词;主要常用句型如下：1、There's no need to do something 没必要做某事例：There's no need to cover such a long distance. 没必要走那么远的距离;There's no need for me to break the window because I have the key. 我没必要打破窗户因为我有钥匙;No need to run since we're not pressed for time. 不必跑啦,我们又不赶时间;也可以单独使用：There's no need. 意思是“没有必要”;2、in great need of 非常需要例：The rescue team is in great need of medicine. 救援小组非常需要药品;3、if need be 如果需要的话例：If need be, I'm going to do you a favor. 如果需要的话我会帮你的;四、关于need的一些短语、俚语用法;1、A friend in need is a friend indeed. 患难之交才是真朋友;could+have+过去分词”的10种用法一、表示主观猜测即对已经发生动作或已经存在的状态作出主观上的猜测,通常可译为“可能已经”,有时需根据具体语境来;如：We could not have heard them because of the noise from the river. 由于有河水声我们不能听见他们的话;Tom could have taken the money; he was here alone yesterday. 有可能是汤姆把钱拿走了,昨天他单独一个人在这里呆过;We knew he couldn’t have paid for it, because he had no money. 我们知道不可能是他付了这笔钱,因为他没钱;说明该用法也可将could换成can,但这只限于否定句和疑问句,因为can表推测时不用于肯定句而could可以用于肯定句;如：Can he have left already 他会已经离开了吗They can’t have gone out because the light’s on. 他们不可能出去了,因为灯还亮着;二、表示未曾实现的能力即表示过去本来有能力可以做某事的,但实际上没有那样去做,通常译为“本来可以”“本来能够”等;如：The worst of it is that I could have prevented the accident. 最糟糕的是我本来可以防止这次事故的;We could have got in for nothing—nobody was collecting tickets. 我们本可以不买票就进去——根本没人收票;I could have passed my examination easily but I made too many stupid mistakes. 我本可以轻易通过考试,但我犯了太多不该犯的错误;有时用于反语;如：You’ve broken my pen—thanks for nothing, I could have done that for myself. 你把我的笔给弄坏了——你得了吧,就那我自己也会弄;三、表示未曾实现的可能性即表示过去本来可能发生的情况,而实际上没有发生,通常译为“本来可以”“本来可能”等;如：She could have been seriously injured. 她本来可能伤得很重的;It’s difficult enough, but it could have been worse. 这事情够困难的了,本来可能会更糟呢;有时也可根据语境译为“好在没有”“差点”,尤其是当谈论的是“不好”的情况时;如：She felt miserable. She could have cried. 她感到很痛苦,她差点哭了;That was a bad place to go skiing—you could have broken your leg. 那不是一个滑雪的好地方,好在你没有把腿给摔断;Why did you throw the bottle out of the window Somebody could have been hurt. 你为什么把瓶子扔出窗外呢好在没有砸伤人;They were lucky—they could have been killed. 他们很幸运,差点被打死了;Did you see him fall He could have killed himself. 你看见他摔倒了吗他差点摔死了;有时需要有比较灵活的：When I discovered I’d come for the appointment on the wrong day, I could have kicked myself. 我来赴约发现把日期弄错了,感到非常懊恼;四、表示未曾实现的想法即表示过去本来有做某事的打算或意图,但实际上没有实现,通常译为“本来可以”;如：I could have lent you the money. Why didn't you ask me 我本来可以借这笔钱给你的;你为什么不向我提出I could have given you some hints, but I suppose you thought yourself too grand. 我本可以给你点提示的,但是我认为你太自负了;五、表示未曾实现的选择即表示过去本来可以有机会选择做某事,但实际上没有那样做,通常译为“本来可以”;如：Her husband could have told her, but he did not choose to. 她丈夫本来可以告诉她的,但他不想这样做;I could have lent you the money. Why didn’t you ask me 我本来可以借这笔钱给你的,你为什么不向我提出y ou needn’t have typed it twice. You could have used a carbon. 你没必要打两遍的,你当时本可以用复写纸打;You needn’t have walked up; you co uld have taken the lift. 你没必要走着上去,你本来可以乘电梯的;六、表示批评或责备即表示过去本来有责任或义务应该做某事,但实际上却没有做成,含有批评和责备的意味,通常译为“本来应该”“本来可以”等;如：You could have started a little earlier. 你本可早点动身的;You could have helped me—why did you just sit and watch你本来可以帮我一把嘛——为什么你只是坐在那儿观望呢I am disappointed that you didn’t tell me. You could have told me. 你没告诉我,我感到很失望,你本来应该告诉我的;You could have let me know you were going out tonight. 你本来可以告诉我你今晚是要出去的七、表示达到极限表示即使人们尽力而为去做某事,但还是未能做成,通常用于否定句;如：I couldn’t have won, so I didn’t go in for the race. 反正我也赢不了,所以我就没有参加赛跑;I couldn’t have enjoyed myself more—it was a perfect day. 我玩得没法再痛快了——这一天简直痛快极了;八、表示惊讶表示对所发生的情况感到惊奇,含有“竟然”的意味;如：It seems inconceivable that the accident could have happened so quickly. 这一事故发生得这么快,简直不可思议;Well, I’m blowed I should neve r have thought you could have done it. 真想不到我从未想到居然办得到;九、用于虚拟语气在虚拟条件句中,当谈论过去的情况时,其句型通常是：主句用“could / would / should /might+have+过去分词”,从句用过去完成时;如：If I hadn’t warned you, you could have been killed. 我如不是警告了你,你就可能丧命了; If you had come sooner, you could have helped us. 你如早来一点,就会帮上我们了;If he had known the facts, he could have told us what to do. 如果他了解事实,他是可能告诉我们怎样做的;If anybody had asked me, I could have told them what happened. 如果有谁问过我,我可以告诉他们发生了什么情况;十、用于某些口语惯用表达可用于某些口语惯用表达,如用于I could have sworn…,其意是“我可以发誓”“我千真万确”;如：I could have sworn I’d paid that bill. 我可以发誓我付过账;I could have sworn I heard a knock at the door. 我千真万确听到了敲门声;l情态动词+have+done是重点和难点之一,现将其用法总结归纳如下：一、“must+have+done”表示对过去事情的肯定推测,译成“一定做过某事”,该结构只用于肯定句;1. It must have rained last night, for the ground is wet. 昨晚一定下雨了,因为地面还是湿的;2. You must have been mad to speak to the servant. 你和仆人说话,一定是发疯了;二、“can't+have+done”表示对过去事情的否定推测,译成“不可能做过某事”;1. Mr. Smith can't have gone to Beijing, for I saw him in the library just now. 史密斯先生不可能去北京了,我刚才还在图书馆见过他;2. Mary can't have stolen your money. She has gone home. 玛丽不可能偷你的钱,她回家去了;三、“can+have+done”表示对过去行为的怀疑,用于疑问句,译成“可能做过……吗”;1. There is no light in the room. Can they have gone out 屋里没有灯,他们可能出去了吗2. There is nowhere to find them. Where can they have gone 到处找不到他们,他们可能到什么地方去呢四、“could+have+done”是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做;He could have passed the exam, but he was too careless. 本来他能够通过考试,但是他太粗心;五、“may+have+done”表示对发生过的事情的推测,意思是“可能已经”或“也许已经”,用于肯定句中;—What has happened to George—I don't know. He may have got lost.—乔治发生了什么事——我不知道,他可能迷路了;六、“might+have+done”表示对过去事情的推测,might与may意思相同,但可能性更小;多用于虚拟语气结构中;1. He might have given you more help, even though he was busy. MET90 他或许会多给你一些帮助,即使他很忙;2. She might have achieved greater progress, if you had given her more chances. 如果你多给她点机会,她可能已经取得更大的成绩;七、“would+have+done”虚拟语气,表示对过去事情的假设,意思是“本来会做”;1. I would have told you all about the boy's story, but you didn't ask me. 我本来会告诉你这个小男孩的故事,但是你没有问我;2. Without your help, I wouldn't have achieved so much. 没有你的帮助,我是不会取得如此大的成绩;八、“should+have+done”意思是“本来应该做某事,而实际没做;” “shouldn't+have+done”表示本来不应该做某事,而实际做了;含有指责对方或自责的含意;1. Tom, you are too lazy. The work should have been finished yesterday. 汤姆,你太懒惰了,这项工作本来应该昨天就做完的;2. Look, Tom is crying. I shouldn't have been so harsh on him. 看,汤姆哭了,我本来不应该对他如此严厉;3 you should have told me 你早就应该告诉我九、“ought to+have+done”表示过去应该做而实际并没有做,译成“理应做……”,往往表示遗憾;与“should+have+done”用法基本一样;I ought to have gone home last Sunday. 我理应上星期日回家;You ought not to have given him more help. 你不应该帮助他那么多;十、“need+have+done”表示本来需要做某事而没有做;“needn't+have+done”则表示“本来不需要做某事而做了”;I needn't have bought so much wine—only five people came. 我本来没有必要买这么多酒,只来了五个人;He need have hurried to the station. In that case, be wouldn't have missed the train. 他本来需要快点去车站,那样的话,他就不会误了火车;you need not have said that你没必要这么说would like to have done sth 本打算做某事I would like to have read the article, but I was very busy then.would rather +have done 当时宁愿做了或没做I would rather have refuse his offerYou should have told me so before.你早就应该告诉我;。
人教版高中英语必修3 Unit1 情态动词第四讲：need、dare 基本用法
（天津高考）
It’s quite warm here; we ________ turn the heldn’t
B. mustn’t
走进dare
你敢吗？－dare 基本用法特点
1. dare用作情态动词时，意思是“敢”，其后接动词原形，通常只
1. I wonder how he A. dare to say C. not dare say
实战演练
that to the teacher. B. dare saying D. dared say
课程小结
need dare
用法小结
情态动词 （+动词原形）
实意动词
多用于肯定句； （sb.） need to do
你需要特别记need
need作为实意动词 有人称、数和时态的变化（在变为否定句和疑问句时 需借助于助动词）
（1）当主语是人时，后可接名词和动词不定式， 即： need sth./ need to do sth. 如： He needs some help. 他需要一些帮助。
特殊用法
need作名词用，当“需要，必需”解，不可数。可构成下列短语和 句型：
实战演练
1._T_h_e_r_e_i_s_n_o__n_e_e_d_t_o_ worry at all. 根本没有必要担忧。 2.I’ll come when you __a_r_e_i_n_n_e_e_d__o_f__ help.
典型应用
通过前面的学习，相信大家对这堂课的知识 点有了初步的了解。下面我们通过几个例题 加深对知识的理解及运用：
2. dare用作实意动词时意为“敢于”，可以有各种词形变化，可用于 各类句型（肯定句、否定句、疑问句及各类从句等），其后多接带to的不定 式，有时to也可省去（尤其是在否定句或疑问句），可用于非谓语形式，完 成时态等：
超实用高考英语专题复习：情态动词need与dare的用法
考生要保持每天20分钟的听力练习量。 2、真题最好反复演练。最后的30天，主要应该听去年各省市的高考听力试
题和仿真度比较高的今年各市一模、二模试题。 3、听写训练。做一些真题的听写训练。基本方法，先整体听一遍，然后听
一句写一句，坚持听写完为止，然后再对照原文，检查自己错在哪里。另外值 得一提的是，在正式考试中，做完所有听力20道选择题后，一般来说，没有百 分之百的把握，不要轻易改动第一次做好的答案。据统计，第一次选择往往比 改动后的选择更可靠。
情态动词need /dare 的用法
表达的意义 用于情态动词 用于实义动词
情态动词need的用法
1. You needn’t worry; you will make it one day.
need用作情态动词，表示“需要”,多用于否定句和疑问句
2. To succeed in life, we need to set a goal first.
2、坚持训练。每天要保证做一篇，这是量上的一个要求。还要把做错的做 出标记，重点记忆。应重视文章的整体性和逻辑性。完形填空的过程就是由已 知信息推出未知信息的过程。
四、阅读理解：重中之重 阅读理解是高考的重头戏，提高成绩，阅读理解是关键。考试临近也要坚
持阅读。与其陷入题海，不如抽出20-30分钟阅读英文篇章。 1、阅读训练不停歇。在冲刺阶段，应多进行一些限时训练，通常每五篇阅
4. He did not dare (to) look up. 实义动词dare用于否定句时，后面的不定式符号to也可以省略
5. I dare say he’ll come again. I dare say…/I daresay为固定习语
情态动词need、dare、ought+to考点总结讲义 高三英语高考语法专题复习
高三英语高考语法专题复习情态动词need、dare、ought to考点总结与练习高三英语教研组整理热身练习（2024版）：1.--_______ we clean the classroom immediately?--No, you ______. You ______ clean it after school.A. Must; needn't; canB. Need; mustn't; mayC. Must; mustn't; canD. Shall; can't; may2.It's cold today. You need your coat.A. to wearB. wearC. wearsD. wore3. I wonder how he ___ that to the teacher.A.dare to sayB.dare sayingC.not dare sayD.dared say参考答案与解析：1.答案：A本题主要考查情态动词的用法。
句意：--我们必须立即打扫教室吗？--不，不必。
你可以放学后打扫它。
表“必须”，用must，故排除B/D。
用must 提问时，肯定回答用must，否定回答用needn't/ don't have to, 由No可知此处为否定回答，故排除C，选A。
2.答案：Aneed作实义动词时，后接不定式作宾语，need to do sth. 需要做某事，故选A。
3. 答案：Ddare既可作实义动词，也可做情态动词。
1）作实义动词时，其后既可接to,也可不接to.2) 做情态动词，后不接to，直接接动词原形A.dare to say 有to,这时dare是实义动词，因为主语是he,那么应该有人称或时态的变化，但是dare是原形，所以排除。
B. dare saying, dare后面不管加不加to都跟动词原形，所以排除。