if條件句的虛擬語氣與倒裝句課件.doc

虛擬語氣與倒裝句（教師版）什么是虛擬語氣(subjunctive mood)?If I were you, I would not do like this. 要我是你，我就不會這樣做I wish I became a millionaire. 要是我是個百萬富翁多好啊口頭解釋上面兩個例句后引出虛擬語氣的概念表示說的話不是真實發(fā)生，只是一種假設，主觀愿望，猜測，建議等非真實的情況。今天主要講在條件句中虛擬語氣的使用情況Q: 那是不是所有的條件句都用虛擬語氣？ 這里可以提問同學，進行互動后給出正確答案一分類1. 真實條件句，表示的假設是有可能發(fā)生的，此時主句不用虛擬語氣。e.g. If I have time, I will do the homework. (口頭解釋分析這個句子)2. 虛擬條件句，表示的是一種假象，與事實相反或不太可能會發(fā)生，那就要用虛擬語氣e.g. If I were you, I would do the homework. (口頭解釋分析這個句子)二用法時態(tài)類型主句從句例句與現在事實相反主語+would/should/could/might+ doIf+主語+did (be動詞用were)1. If I were you, I should work hard.2. The bedroom would be so clean if I had time.與過去事實相反主語+would/should/could/might + have doneIf+主語+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.與將來事實相反主語+would/should/could/might + doIf+主語+did（可能性一般）if+主語+should +do（可能性最大）If+主語+were to + do（可能性最小）1.If you came tomorrow, we would have the meeting. 2. If it were to rain tomorrow, the meeting would be put off.總結：從句都往過去推一個時態(tài)。與現在相反-過去 ， 與過去相反-過去的過去（過去完成），與將來相反-過去三重點解析1. l would/should/could/might主句謂語中的should主要用于第一人稱后；would表示結果還表示過去常常做某事，might表示可能性，could表示能力、允許或可能性。比較：If you tried again，you would succeed. 要是你再試一試，你就會成功的。(would表結果)If you tried again， you might succeed. 要是你再試一試，你可能會成功的。(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表能力)2. 錯綜時間虛擬條件句：即條件從句與主句所指時間不一致，如從句指過去，而主句即指的是現在或將來，此時應根據具體的語境情況，結合上面提到的三種基本類型對時態(tài)作相應的調整If it had rained last night, the ground would be wet now. 要是昨晚下過雨的話，現在地面就會是濕的。If he were free today, we would sent him to Beijing.如果他今天有空的話，我們就已經派他去北京。 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.如果我能再上一次學，我會學習得更努力。Had you asked me, I would have told you. (=If you had asked me,)如果你問我，我會告訴你。四鞏固檢測1. If I were you, I would take an umbrella (如果我是你，我會帶把傘)2. If I had gotten there earlier, I should/could met her.(如果我早點到，我就會見到她)3. If there were a heavy snow next Sunday, we would not go skating. (如果下周日下大雪，我們就不能去滑冰了)4. If it should