『紧急求助』高中英语:什么叫逻辑主语?干什么用的?有哪些词?谢谢~
- 提问者网友:抽煙菂渘情少年
- 2021-01-28 09:22
- 五星知识达人网友:底特律间谍
- 2021-01-28 10:00
It being dark, we should go home.这里It是逻辑主语,we是句子主语。
只要语意上讲的通,什么词都行。
- 1楼网友:蕴藏春秋
- 2021-01-28 11:37
不定式是英语动词的一种形式。它在许多情况下可省略"to"它不同于汉语动词,汉语动词只有一种形式。如:我看书。她看书。但英语要说“看”必须根据主语的人称,动作发生的时间等确定其形式。如:1)i read a book. 2)she reads a book.1)句中的“read” 是一般现在时第一人称的动词定式。2)句中的“reads”是一般现在时第三人称单数的动词定式。 i want to read a book./she wants to read a book. 我想要看书。她想要看书。其中的“看”不易确定其形式。因为动作
复合形容词 复合形容词的构成: 1.数词+名词(单数) 例: one-child独生子的 2.数词+名词(单数)+形容词 例:three-year-old 3.数词+名词+ed 例:two-faced两面的 4.形容词+(普通) 例:名词 full-time全日制的 5.形容词+名词+ed 例: kind-hearted好心的 6.形容词(副词)+现在分词 例:good-looking好看的 well-meaning善意的 7.形容词(副词)+过去分词 例:well-dress衣冠楚楚的 newly-built新建的 8.形容词(副词)+形容词 例:red-hot炙热的 hardly-conscious不自觉的 9.名词+现在分词 例:english-speaking讲英语的 10.名词+过去分词 例:hand-made手工制的 11.名词+形容词 例:ice-cold冰冷的 12.名词+(普通) 例:名词 x-rayx光的还未发生,因此称不定式。通俗的说,就是“不一定是什么形式”情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 编辑本段分类: 情态动词有四类: ①只做情态动词:must,can(could),may(might),ought to ②可做情态动词又可做实义动词:need,dare ③可做情态动词又可做助动词:shall(should),will(would) ④具有情态动词特征:have(had) to,used to 编辑本段位置: 情态动词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, 情态动词则在主语之前。 i can see you. come here. 我能看见你,过来吧。 he must have been away. 他一定走了。 what can i do for you? 你要什么? how dare you treat us like that! 你怎能那样对待我们! 编辑本段特点: 情态动词无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加 "not"。 个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去,现在或将来。情态动词属非及物动词,故没有被动语态。 he could be here soon. 他很快就来。 we can't carry the heavy box. 我们搬不动那箱子。 i'm sorry i can't help you. 对不起,我帮不上你。 基本助动词与情态助动词最主要的区别之一是,基本助动词本身没有词义,而情态助动词则有自己的词义,能表示说话人对有关动作或状态的看法,或表示主观设想: what have you been doing since? (构成完成进行体,本身无词义) i am afraid i must be going. (一定要) you may have read some account of the matter. (或许已经) 除此之外,情态助动词还有如下词法和句法特征: 1) 除ought和used以外,其他情态动词后面只能接不带to的不定式。如果我们把ought to和used to看做是固定词组的话,那么,所有情态动词无一例外地只能接不带to的不定式: we used to grow beautiful roses. i asked if he would come and repair my television set. 2) 情态助动词在限定动词词组总是位居第一: they need not have been punished so severely. 3) 情态助动词用于第三人称单数现在时的时候,没有词形变化,即其词尾无-s形式: she dare not say what she thinks. 4) 情态动词没有非限定形式,即没有不定式和分词形式,也没有相应的动名词: still, she needn't have run away. 5) 情态助动词的“时”的形式并不是时间区别的主要标志。在不少场合,情态助动词的现在时和过去时形式都可以表示现在、过去或将来时间: would you mind very much if i ask you to do something? she told him he ought not to have done it. 6) 情态助动词之间是相互排斥的,即在一个限定动词词组中只能出现一个情态助动词,但有时却可以与have和be基本助动词连用: you should have washed the wound. well, you shouldn't be reading a novel. 编辑本段用法 首先它是动词,而且不同于行为动词,行为动词表示的是可以通过行为来表达的动作(如写,读,跑),而情态动词只是表达的一种想法(如能,也许,敢)。 用法是:情态动词+行为动词原形 例句:i can read this sentence in english. 我能用英语读这句话。 情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 we can be there on time tomorrow.我们明天能按时去那儿。 may i have your name? 我能知道你的名字吗? shall we begin now?我们现在就开始吗? you must obey the school rules.你必须遵守校规。 情态动词数量不多,但用途广泛,主要有下列: can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would),have (to) ,had better. 编辑本段功能 助动词(auxiliary)主要有两类:基本助动词(primary auxiliary)和情态助动词(modal auxiliary)。基本助动词有三个:do, have和be;情态助动词有十三个:may, might; can, could; will, would; shall, should; must, need, dare, used to, ought to. 上述两类助动词的共同特征是,在协助主动词构成限定动词词组时,具有作用词的功能: 1) 构成否定式: he didn't go and neither did she. the meeting might not start until 5 o'clock. 2) 构成疑问式或附加疑问式: must you leave right now? you have been learning french for 5 years, haven't you? 3) 构成修辞倒装: nowhere can he obtain any information about his sister. hardly had he arrived when she started complaining. 4) 代替限定动词词组: a: who can solve this crossword puzzle? b: tom can. a: shall i write to him? b: yes, do.
先行词:是在定语从句中,被定语从句所修饰的名词.例如: he is a teacher who teach our english.在这里定词从句who teach our english是来修饰前面的名词teacher.所以teacher就是一个先行词. 再说下它的用法: 1、先行词指人时,引导词可用who,whom,及that,其中当引导词在句中作主语时用who或that;当其充当宾语时用whom或that,在非正式宾语中也可用who,也可省略。 a that boy who/that broke the window is called tom. b the person to whom you just talked is mr li. b 句可改为:the person(that/whom/who)you just talked to is mr li. 2、先行词指物时,引导词用that或which a.they planted the trees which didn’t need much water. b .the fish (which)we bought were not fresh. 3、先行词指时间时,引导词用when/on which或in which a.i still remember the day when/on which i first came to bei jing. b.i'll never forget the year when/ on which we worked on the farm. 4、先行词指地点时,引导词用where或in which this is the house where/in which we lived last year. 或:this is the house that/which we lived in last year. 5、whose在定语从句中作定语时,可用来指人,也可以用来指物,如: a.this is the boy whose mother died a month ago. b.this is the house whose windows were broken.此句可改成: this is the house the windoues of which were broken. 6、先行词表示原因时,引导词用why,如: the reason why he was late for school was that he had been knocked down by a bike.
逻辑主语:是非谓语动词动作的执行者或承受者;它们在逻辑上存在着主谓关系或动宾关系,但不能直接作非谓语动词的主语,因此叫逻辑主语。 1. 句子主语就是非谓语动词的逻辑主语,它们之间是逻辑上的主谓关系或动宾关系。例如: he likes helping others . (he 是helping 的逻辑主语) moved by his words , i told him all the news . (i 是moved 的逻辑主语) 2. 介词of 或for的宾语就是非谓语动词的逻辑主语。例如: it's kind of you to tell me the news . (you 是to tell 的逻辑主语) it is impossible for you to finish so much work in so short a time . (you 是to finish 的逻辑主语) 3. 复合结构中的宾语就是非谓动词的逻辑主语。例如: the teacher asked me to answer his question . (me 是to answer 的逻辑主语) i saw him playing at the river side . (him 是playing 的逻辑主语)