高二unit8wordsstudygrammerppt(編輯修改稿)
2024-12-23 03:58 本頁面
【文章內(nèi)容簡介】 u, he, they)＋had＋過去分詞的形式；主句的謂語用 should（第一人稱）/would（第二、三人稱） /could/might have ＋動詞過去分詞。 如果你仔細(xì)一點(diǎn)， 這個錯誤是可以避免的。 If you had been more careful, the mistake might have been avoided. 昨晚如果有時間，我就會來看你的。 If I had time last night, I should have e to see you. 假如受過良好的教育，他就不會表現(xiàn)成那樣。 He would never have behaved like that if he had had a good education. 假如我的表不停，我就會準(zhǔn)時的。 If my watch had not stopped, I should have been on time. 3 與將來事實(shí)相反 從句的謂語用 If I (we, you, he, they) ＋動詞過去式或 were to do 或 should do 形式，主句謂語用 should（第一人稱）/would（第二、三人稱） /could/ might ＋動詞原形。 假如他來了， 我們對他說什么呢？ If he were to e, what should we say to him. 假如他看見我， 就會認(rèn)識我。 If he should see me, he would know me. 假如我們爬上山頂，我們能有一個好的視野嗎？ If we climbed to the top of the mountain, should we get a good view? 5 當(dāng)條件狀語從句表示的行為和主句表示的行為所發(fā)生的時間不一致時，被稱為“錯綜時間條件句”，動詞的形式要根據(jù)它所表示的時間作出相應(yīng)的調(diào)整。 如果他早點(diǎn)出發(fā)，他現(xiàn)在已到家了。 If he had set out earlier, he would be home now. 假如我不忙，我家會來了。 If I were not busy, I would have e. 假如你接受了我的意見，你現(xiàn)在就會好的多。 You would be much better now if you had taken my advice. 6 用介詞短語代替條件狀語從句。常用的介詞由 with, without, but for等。 What would you do with a million dollars?=if you had a million dollars 4 If從句中若含有 should, had 或者 were，那么就可以把它們放在句首，與主語顛倒形成倒裝，但動詞過去式不可以與主語倒裝。 如果他在，他會來幫助我們。 Were he here, he would e to help us. 假如你剛才在這里，你就會遇見她。 Had you been here just now, you would have met her. 假如我明天看見他，我就會告訴他關(guān)于這一切。 Should I see him tomorrow, I would tell him about it. 假如你按照我說的去做，你就會成功。 Had you done as I told you, you would have succeeded. We couldn’t have finished the work ahead of time without your help. (＝ if we hadn’t got your help) But for rain(=If it hadn’t been for the rain), we would have finished the work. 7 含蓄條件句 有時為了表達(dá)的需要，在虛擬語氣中并不總是出現(xiàn) if引導(dǎo)的條件句，而通過其他手段代替條件句。 I was ill that day. Otherwise, I would have taken part in the sports meet.（副詞） He telephoned to inform me of your birthday, or I would have known nothing about it .（連詞） A man who stopped drinking water would be dead in about seven days. （定語從句） Everything taken into consideration, they would have raised their output quickly.（獨(dú)立主格結(jié)構(gòu)） 二、虛擬語氣在賓語從句中的用法 1 在動詞 wish后的賓語從句中，表示與現(xiàn)在或過去的事實(shí)相反，或?qū)淼闹饔^愿望，從句通常省略連詞 that。 （ 1）表示對現(xiàn)在情況的虛擬：從句動詞用過去式或過去進(jìn)行式（ be動詞一般用 were）。 我希望知道這個問題的答案。 I wish I knew the answer to the question. 但愿北京全年是秋天。 I wish it were autumn in Beijing all the year aro
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