日本中文字幕有码在线视频三级,欧美视频一区亚洲不要,久久久综合九色综合88,久久综合久久首页

          更三高考訂閱頁

          2017年12月英語六級基礎(chǔ)語法知識:虛擬語氣

          Ai高考 · 四六級英語
          2022-10-17
          更三高考院校庫

          在大學(xué)英語六級考試中,單獨考察英語六級語法的題型幾乎沒有,但是語法知識點卻貫穿整張試卷,下面是本站網(wǎng)英語六級頻道為大家整理的大學(xué)英語六級基礎(chǔ)語法知識,希望可以為大家?guī)韼椭?/p>

          2017年12月大學(xué)英語六級基礎(chǔ)語法知識匯總

          虛擬語氣

          1. 表示現(xiàn)在/過去/將來情況的虛擬條件句

          虛擬條件句主要有三種結(jié)構(gòu):

          1) 表示與現(xiàn)在情況相反:主句謂語用“would / could / might +動詞原形”,從句謂語用“動詞的一般過去時”(動詞be的過去式一律用were)。

          If I were you, I would not accept his offer.

          If I had time, I would certainly go to the cinema with you.

          2) 表示與過去情況相反:主句謂語用“would / could / might + have +過去分詞”,從句謂語用過去完成時。

          If I had got up a little earlier, I wouldn’t have missed the train.

          If I had been more careful, I might have passed that exam.

          3) 表示與將來情況相反:主句謂語用“would / could / might +動詞原形”,從句謂語用“were +動詞不定式”或“should +動詞原形”。

          If I were to do the job, I would not be able to have enough time to study.

          If it should rain tomorrow, I would not go out with you.

          2. 虛擬條件句連接詞if的省略

          如果虛擬條件句的從句中含有were, had, should, could等詞時,可以省略連接詞if,但這時必須把were, had, should, could等詞移到主語前面,形成倒裝。這種句型主要用于書面形式。

          Were I to do the job, I would finish doing it within two weeks.

          Had it not been for his help, we couldn’t have arrived there on time.

          Should it rain tomorrow, I would stay at home.

          3. wish后賓語從句中的謂語構(gòu)成

          動詞wish后的賓語從句表示未實現(xiàn)的或不可能實現(xiàn)的愿望,其賓語從句中的謂語動詞要用虛擬語氣,有以下三種構(gòu)成形式。

          1) 表示現(xiàn)在不可能實現(xiàn)的愿望,賓語從句中的謂語動詞用一般過去時。(be的過去式為were)。

          I wish I had enough money to buy a car.

          I wish I were as young and energetic as you.

          2) 表示過去未能實現(xiàn)的愿望,賓語從句中的謂語動詞用過去完成時(had +過去分詞)或“would / could + have +過去分詞 ”。

          I wish I hadn’t made such a mistake.

          I wish I could have done it better.

          3) 表示將來不可能實現(xiàn)的愿望,賓語從句中的謂語動詞用“would / should (could, might) +動詞原形”。

          I wish I would not get old.

          I wish I could travel around the world one day.

          4. 某些動詞后的賓語從句中謂語動詞要用虛擬語氣

          在一些動詞后面的賓語從句中,謂語動詞要用虛擬語氣。這時,謂語動詞用動詞原形或should +動詞原形。這類動詞一般表示命令,要求,決定,建議,主張等概念,主要有:advise, ask, command, decide, demand, desire, direct, insist, move, order, propose, recommend, request, require, suggest,等。

          The workers demanded that their wages (should) be raised by 10 per cent.

          The teacher decided that you do the experiment first.

          5. 某些名詞后的表語從句和同位語從句中謂語動詞要用虛擬語氣

          在一些名詞后面的表語從句和同位語從句中,謂語動詞要用虛擬語氣。這時,謂語動詞用動詞原形或should +動詞原形。這類名詞一般表示命令,要求,決定,建議,主張等概念,主要有:advice, idea, instruction, motion, order, plan, proposal, recommendation, request, requirement, suggestion,等。

          My suggestion is that we (should) send for a doctor immediately.

          He gave the order that they (should) do the experiment again.

          6. 錯綜時間條件句

          條件從句表示的動作和主句表示的動作,有時發(fā)生的時間是不一致的.如從句是對過去情況的假設(shè),而主句可能是對現(xiàn)在正在進(jìn)行情況的假設(shè)。 這種句子稱為錯綜時間條件句.

          If the weather had been more favourable, the crops would be growing still better.