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  • 比較until和till 此兩個(gè)連詞意義相同?隙ㄐ问奖硎镜囊馑际 做某事直至某時(shí) ,動(dòng)詞必須是延續(xù)性的。否定形式表達(dá)的意思是 直至某時(shí)才做某事 。動(dòng)詞為延續(xù)性或非延續(xù)性都可以。正確使用這兩個(gè)連詞的關(guān)鍵之一就在于
  • 比較while, when, as 1)as, when 引導(dǎo)短暫性動(dòng)作的動(dòng)詞。 Just as / Just when / When I stopped my car, a man came up to me. 2)當(dāng)從句的動(dòng)作發(fā)生于主句動(dòng)作之前,只能用when 引導(dǎo)這個(gè)從句,不可用as 或 while
  • 讓步狀語從句 1)though, although 注意:當(dāng)有though, although時(shí),后面的從句不能有but,但是 though 和yet可連用 Although it s raining, they are still working in the field. 雖然在下雨,但他們?nèi)栽诘乩锔苫?
  • 條件狀語從句 連接詞主要有 if, unless, as/so long as, on condition that 等。. if 引導(dǎo)的條件句有真實(shí)條件句和非真實(shí)條件句兩種。非真實(shí)條件句已在虛擬語氣中闡述。 unless = if not. Let s go out for a walk u
  • 結(jié)果狀語從句 結(jié)果狀語從句常由so that 或 such that引導(dǎo),掌握這兩個(gè)句型,首先要了解so 和 such與其后的詞的搭配規(guī)律。 比較:so和 such 其規(guī)律由so與such的不同詞性決定。such 是形容詞,修飾名詞或名詞詞組,s
  • 目的狀語從句 表示目的狀語的從句可以由that, so that, in order that, lest, for fear that, in case等詞引導(dǎo),例如: You must speak louder so that /in order that you can be heard by all. He wrote the name
  • 原因狀語從句 比較:because, since, as和for 1)because語勢(shì)最強(qiáng),用來說明人所不知的原因,回答why提出的問題。當(dāng)原因是顯而易見的或已為人們所知,就用as或 since。 I didn t go, because I was afraid. Since /
  • 方式狀語從句 方式狀語從句通常由as, (just) as so , as if, as though引導(dǎo)。 1) as, (just) as so 引導(dǎo)的方式狀語從句通常位于主句后,但在(just) as so 結(jié)構(gòu)中位于句首,這時(shí)as從句帶有比喻的含義,意思是 正如
  • 地點(diǎn)狀語從句 地點(diǎn)狀語從句通常由where, wherever 引導(dǎo)。 Where I live there are plenty of trees. 我住的地方樹很多。 Wherever I am I will be thinking of you. 不管我在哪里我都會(huì)想到你。 點(diǎn)擊查看更多:更多
  • 與后接名詞或代詞保持一致 1) 用half of, part of, most of, a portion of 等詞引起主語時(shí),動(dòng)詞通常與of后面的名詞,代詞保持一致。 Most of his money is spent on books. Most of the students are taking an a
  • 指代意義決定謂語的單復(fù)數(shù) 1) 在代詞what, which, who, none, some, any, more, most, all等詞的單復(fù)數(shù)由其指代的詞的單復(fù)數(shù)決定。 All is right. 一切順利。 All are present. 所有人都到齊了。 2) 集體名詞作主
  • 謂語需用單數(shù) 1) 代詞each和由every, some, no, any等構(gòu)成的復(fù)合代詞作主語,或主語中含有each, every, 謂語需用單數(shù)。 Each of us has a tape-recorder. There is something wrong with my watch. 2) 當(dāng)主語是一
  • 謂語動(dòng)詞與前面的主語一致 當(dāng)主語后面跟有with, together with, like, except, but, no less than, as well as 等詞引起的短語時(shí),謂語動(dòng)詞與前面的主語一致。 The teacher together with some students is visitin
  • 主謂一致中的靠近原則 1)當(dāng)there be 句型的主語是一系列事物時(shí),謂語應(yīng)與最鄰近的主語保持一致。 There is a pen, a knife and several books on the desk.. There are twenty boy-students and twenty-three girl
  • 并列結(jié)構(gòu)作主語時(shí)謂語用復(fù)數(shù) Reading and writing are very important. 注意:當(dāng)主語由and連結(jié)時(shí),如果它表示一個(gè)單一的概念,即指同一人或同一物時(shí),謂語動(dòng)詞用單數(shù),and 此時(shí)連接的兩個(gè)詞前只有一個(gè)冠詞。 The ir
  • 時(shí)態(tài)一致 1) 如果從句所敘述的為真理或不變的事實(shí),則永遠(yuǎn)用現(xiàn)在時(shí)。 At that time, people did not know that the earth moves. He told me last week that he is eighteen. 2) 賓語從句中的助動(dòng)詞ought, need, mu
  • 現(xiàn)在進(jìn)行時(shí)代替將來時(shí) 1) 表示即將發(fā)生的或預(yù)定中計(jì)劃好的活動(dòng)。 Are you staying with us this weekend? 這周和我們一起度周末嗎? We are leaving soon. 我們馬上就走。 2) 漸變動(dòng)詞,如:get, run, grow, become,
  • 一般現(xiàn)在時(shí)代替將來時(shí) (1)時(shí)間狀語從句,條件句中,從句用一般現(xiàn)在時(shí)代替將來時(shí) When, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether,
  • 過去進(jìn)行時(shí) 1) 概念:表示過去某時(shí)正在進(jìn)行的狀態(tài)或動(dòng)作。 2) 過去進(jìn)行時(shí)的主要用法是描述一件事發(fā)生的背景;一個(gè)長(zhǎng)動(dòng)作發(fā)生的時(shí)候,另一個(gè)短動(dòng)作發(fā)生。 3) 常用的時(shí)間狀語 this morning, the whole morning, all
  • 不用進(jìn)行時(shí)的動(dòng)詞 1) 事實(shí)狀態(tài)的動(dòng)詞 have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continue I have two brothers. This house belongs to my sister. 2) 心理狀態(tài)的動(dòng)詞
  • 現(xiàn)在進(jìn)行時(shí) 現(xiàn)在進(jìn)行時(shí)的基本用法: a. 表示現(xiàn)在( 指說話人說話時(shí)) 正在發(fā)生的事情。 We are waiting for you. b. 習(xí)慣進(jìn)行:表示長(zhǎng)期的或重復(fù)性的動(dòng)作,說話時(shí)動(dòng)作未必正在進(jìn)行。 Mr. Green is writing another no
  • 將來完成時(shí) 1) 構(gòu)成will / be going to do sth. 2) 概念 a. 狀態(tài)完成:表示某事繼續(xù)到將來某一時(shí)為止一直有的狀態(tài)。 b. 動(dòng)作完成:表示將來某一時(shí)或另一個(gè)將來的動(dòng)作之前,已經(jīng)完成的動(dòng)作或一獲得的經(jīng)驗(yàn)。 They wil
  • 用一般過去時(shí)代替完成時(shí) 1)兩個(gè)動(dòng)作如按順序發(fā)生,又不強(qiáng)調(diào)先后,或用then,and,but 等連詞時(shí),多用一般過去時(shí)。 When she saw the mouse,she screamed. My aunt gave me a hat and I lost it. 2 ) 兩個(gè)動(dòng)作相繼
  • 過去完成時(shí) 1)概念:表示過去的過去 --那時(shí)以前--那時(shí)--現(xiàn)在-- 其構(gòu)成是had +過去分詞構(gòu)成。 2)用法 a.在told, said, knew, heard, thought等動(dòng)詞后的賓語從句。 She said (that) she had never been to Paris. b
  • 比較since和for Since 用來說明動(dòng)作起始時(shí)間,for用來說明動(dòng)作延續(xù)時(shí)間長(zhǎng)度。 I have lived here for more than twenty years. I have lived here since I was born.. My aunt has worked in a clinic since 1949.
  • 用于現(xiàn)在完成時(shí)的句型 1)It is the first / second time . that 結(jié)構(gòu)中的從句部分,用現(xiàn)在完成時(shí)。 It is the first time that I have visited the city. 這是我第一次訪問這座城市。 It was the third time that
  • 現(xiàn)在完成時(shí) 現(xiàn)在完成時(shí)用來表示之前已發(fā)生或完成的動(dòng)作或狀態(tài),其結(jié)果的確和現(xiàn)在有聯(lián)系。動(dòng)作或狀態(tài)發(fā)生在過去但它的影響現(xiàn)在還存在;也可表示持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)。其構(gòu)成:have (has) +過去分詞。 比較過去時(shí)
  • 一般現(xiàn)在時(shí)表將來 1)下列動(dòng)詞:come, go, arrive, leave, start, begin, return的一般現(xiàn)在時(shí)表將來。這主要用來表示在時(shí)間上已確定或安排好的事情。 The train leaves at six tomorrow morning. When does the bus
  • be going to / will 用于條件句時(shí), be going to 表將來 will 表意愿 If you are going to make a journey, you d better get ready for it as soon as possible. Now if you will take off your clothes, we will
  • 一般將來時(shí) 1) shall用于第一人稱,常被will 所代替。 will 在陳述句中用于各人稱,在爭(zhēng)求意見時(shí)常用于第二人稱。 Which paragraph shall I read first. Will you be at home at seven this evening? 2) be going
  • used to / be used to used to + do: 過去常常 表示過去習(xí)慣性的動(dòng)作或狀態(tài),但如今已不存在。 Mother used not to be so forgetful. Scarf used to take a walk.(過去常常散步) be used to + doing:對(duì) 已感到習(xí)
  • 一般過去時(shí)的用法 1)在確定的過去時(shí)間里所發(fā)生的動(dòng)作或存在的狀態(tài)。 時(shí)間狀語有:yesterday, last week, an hour ago, the other day, in 1982等。 Where did you go just now? 2)表示在過去一段時(shí)間內(nèi),經(jīng)常性或
  • 一般現(xiàn)在時(shí)的用法 1) 經(jīng)常性或習(xí)慣性的動(dòng)作,常與表示頻腮度的時(shí)間狀語連用。 時(shí)間狀語:every , sometimes,at , on Sunday I leave home for school at 7 every morning. 2) 客觀真理,客觀存在,科學(xué)事實(shí)。 The e
  • 反意疑問句 1)陳述部分的主語是I,疑問部分要用 aren t I. I m as tall as your sister,aren t I? 2)陳述部分的謂語是wish,疑問部分要用may +主語。 I wish to have a word with you, may I? 3)陳述部分用 no, no
  • 用助動(dòng)詞進(jìn)行強(qiáng)調(diào) 強(qiáng)調(diào)句還有一種類型,就是用助動(dòng)詞do (did,does) 強(qiáng)調(diào)謂語。 She does like this horse. 她的確喜歡這匹馬。 Please do take care of yourself. 千萬保重。 點(diǎn)擊查看更多:更多語法知識(shí) 奧數(shù)網(wǎng)
  • 強(qiáng)調(diào)句結(jié)構(gòu) 常考的強(qiáng)調(diào)句結(jié)構(gòu)是it 引導(dǎo)的句子。 It is (was) 被強(qiáng)調(diào)部分+ that (who) + 句子其他部分。 此結(jié)構(gòu)強(qiáng)調(diào)的成分僅限于主語,賓語和狀語。 It is from the sun that we get light and heat. It was not unt

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