if條件句的虛擬語(yǔ)氣與倒裝句課件

1、精選文檔虛擬語(yǔ)氣與倒裝句（老師版）什么是虛擬語(yǔ)氣(subjunctive mood)?If I were you, I would not do like this. 要我是你，我就不會(huì)這樣做I wish I became a millionaire. 要是我是個(gè)百萬(wàn)富翁多好啊口頭解釋上面兩個(gè)例句后引出虛擬語(yǔ)氣的概念表示說(shuō)的話不是真實(shí)發(fā)生，只是一種假設(shè)，主觀愿望，猜想，建議等非真實(shí)的狀況。今日主要講在條件句中虛擬語(yǔ)氣的使用狀況Q: 那是不是全部的條件句都用虛擬語(yǔ)氣？ 這里可以提問(wèn)同學(xué)，進(jìn)行互動(dòng)后給出正確答案一分類1. 真實(shí)條件句，表示的假設(shè)是有可能發(fā)生的，此時(shí)主句不用虛擬語(yǔ)氣。e.g. If

2、I have time, I will do the homework. (口頭解釋分析這個(gè)句子)2. 虛擬條件句，表示的是一種假象，與事實(shí)相反或不太可能會(huì)發(fā)生，那就要用虛擬語(yǔ)氣e.g. If I were you, I would do the homework. (口頭解釋分析這個(gè)句子)二用法時(shí)態(tài)類型主句從句例句與現(xiàn)在事實(shí)相反主語(yǔ)+would/should/could/might+ doIf+主語(yǔ)+did (be動(dòng)詞用were)1. If I were you, I should work hard.2. The bedroom would be so clean if I had tim

3、e.與過(guò)去事實(shí)相反主語(yǔ)+would/should/could/might + have doneIf+主語(yǔ)+had done1. If I had finished my homework,I would have passed that test.2. If I had left a little earlier, I would have caught the train.與將來(lái)事實(shí)相反主語(yǔ)+would/should/could/might + doIf+主語(yǔ)+did（可能性一般）if+主語(yǔ)+should +do（可能性最大）If+主語(yǔ)+were to + do（可能性最?。?.If yo

4、u came tomorrow, we would have the meeting. 2. If it were to rain tomorrow, the meeting would be put off.總結(jié)：從句都往過(guò)去推一個(gè)時(shí)態(tài)。與現(xiàn)在相反-過(guò)去 ， 與過(guò)去相反-過(guò)去的過(guò)去（過(guò)去完成），與將來(lái)相反-過(guò)去三重點(diǎn)解析1. l would/should/could/might主句謂語(yǔ)中的should主要用于第一人稱后；would表示結(jié)果還表示過(guò)去經(jīng)常做某事，might表示可能性，could表示力量、允許或可能性。比較：If you tried again，you would succeed

5、. 要是你再試一試，你就會(huì)成功的。 (would表結(jié)果)If you tried again， you might succeed. 要是你再試一試，你可能會(huì)成功的。 (might表可能)If you tried again ，you could succeed. 要是你再試一試，你就能成功了。(could表力量)2. 錯(cuò)綜時(shí)間虛擬條件句：即條件從句與主句所指時(shí)間不全都，如從句指過(guò)去，而主句即指的是現(xiàn)在或?qū)?lái)，此時(shí)應(yīng)依據(jù)具體的語(yǔ)境狀況，結(jié)合上面提到的三種基本類型對(duì)時(shí)態(tài)作相應(yīng)的調(diào)整If it had rained last night, the ground would be

6、 wet now. 要是昨晚下過(guò)雨的話，現(xiàn)在地面就會(huì)是濕的。If he were free today, we would sent him to Beijing.假如他今日有空的話，我們就已經(jīng)派他去北京。 3. If虛擬條件句的倒裝形式：即把were, had, should置于句首，if可省略;。e.g. Were I in school again (= If I were in school again), I would work harder.假如我能再上一次學(xué)，我會(huì)學(xué)習(xí)得更努力。Had you asked me, I would have told you. (=If you had asked me,)假如你問(wèn)我，我會(huì)告知你。四鞏固檢測(cè)1. If I were you, I would take an umbrella (假如我是你，我會(huì)帶把傘)2. If I had gotten there earlier, I should/could met her.(假如我早點(diǎn)到，我就會(huì)見(jiàn)到她)3. If there were a heavy snow next Sunday, we would not go skating. (假如下周日下大雪，我們就不能去滑冰了)4. If it should