【正文】 u.我要是像你一樣年輕該多好。但單數(shù)第一、三人稱也可用was。3. 一些程序化了的必須或可能使用虛擬語氣的情況在英語中，有些動詞、短語、句型中，必須或可能要使用虛擬語氣，下面逐一說明：（1）wish, if only, would rather, would sooner 后的虛擬語氣wish, if only, would rather, would sooner是指人們無法實(shí)現(xiàn)或很難實(shí)現(xiàn)的主觀愿望表2. 從句中謂語動詞的形式用 法動詞形式表示當(dāng)時未實(shí)現(xiàn)的愿望一般過去式表示過去未實(shí)現(xiàn)的愿望過去完成式表示將來不可能實(shí)現(xiàn)或?qū)崿F(xiàn)可能性很小的愿望過去將來式（見表1）的條件狀語從句中的謂語動詞形式基本相同。In that case we could have done the work better.如果是那樣的話，我們本可能把工作做得更好些的。例如：Without air, there would be no wind or clouds.如果沒有空氣，就不會有風(fēng)或云。Were you not here, none of us would e.如果你們不在這兒，我們沒人會來。Should she e here, we would discuss this matter with her.要是他來這兒的話，我們就和她討論這件事。這種句型主要見于書面形式。）(5)省略if的非真實(shí)條件句如果非真實(shí)條件句中的謂語包括had, should, were三個詞，連接詞if可以省略。）If we hadn’t got everything ready by now, we should be having a terrible time tomorrow.如果我們到現(xiàn)在還未準(zhǔn)備好，明天就會有很多麻煩。）If you were in better health, we would have allowed you to join them in the work.如果你身體好些，我們就讓你和他們一道做這工作了。例如：If we had set out earlier, we wouldn’t be walking in the rain.如果我們早點(diǎn)動身，現(xiàn)在就不會在雨中走了。(4)錯綜時間非真實(shí)條件句 錯綜時間非真實(shí)條件句是指條件句與主句動作發(fā)生的時間不一致。If the rocket should fall in a few seconds, it would certainly explode.如果火箭幾秒鐘內(nèi)竟然向下墜落，那就一定會爆炸。She would have e if she hadn’t been so busy.要不是太忙，她就來了。(2)與過去事實(shí)相反If I had left a little earlier, I would have caught the train.我要是早點(diǎn)動身就趕上火車了。If it weren’t/wasn’t raining, we wouldn’t stay indoor.要是現(xiàn)在不下雨，我們就不會呆在屋里。我兄弟做了 I didn’t need to clean the windows . My brother did it.would have done 本來會去做 (1)與現(xiàn)在事實(shí)相反If the earth had no gravity, the moon would fly to the sun.如果地球沒有引力，月球就會飛向太陽。would / should / might / could + 動詞原形現(xiàn)在動詞過去式(be 用 were)would / should / might / could + 動詞原形過去had +動詞過去分詞would / should / might / could have + 動詞過去分詞情態(tài)動詞+ have donecould have done 本來可以 might have done 本來可能 should / ought to have done 本來應(yīng)該做 shouldn’t / ought not to have done 本不該做 你本不應(yīng)該告訴她真相。時間 從句謂語形式 主句謂語形式succeed!祝您成功！虛擬語氣是動詞的一種特殊形式，用來表達(dá)未能成為事實(shí)或者不可能成為事實(shí)的情況，或者在說話人看來實(shí)現(xiàn)可能性很小的情況。 ③MaypassI ②ItheflyIaI虛擬語氣表示動作或狀態(tài)不是客觀存在的事實(shí)，而是說話人的主觀愿望、假設(shè)或推測等。offto ② Don’tlate① Neversheayesterday?昨天一整天你都很忙嗎？ ③Howallyoueverysidesare陳述語氣表示動作或狀態(tài)是現(xiàn)實(shí)的、確定的或符合事實(shí)的，用于陳述句、疑問句和某些感嘆句。Subjunctive Mood1. 語氣Mood語氣是動詞的一種形式，表示說話人對一事物和人的態(tài)度和看法。包括陳述語氣，祈使語氣和虛擬語氣三種。①Theretwoto ②Werebusydaygoodteacheris!她是多好的一位老師?。?祈使語氣祈使語氣：表示說話人對對方的請求或命令。beagain!再也不要遲到了。forgetturnthe①Ifwerebird,couldin我就能在空中飛行。wishcouldtheyou此外還可用來表示命令、建議、設(shè)想、祝愿（或詛咒）等等，以及表達(dá)說話人的主觀愿望。將來動詞過去式(be用were)should + 動詞原形were to + 動詞原形You shouldn’t have told her the truth .needn’t have done 本不必做 比較：didn’t need to do 沒必要做也沒有做 我沒必要擦窗戶。If I were/was you I would reconsider their proposal.我要是你，我就會重新考慮他們的建議。If the manager were/was here, he might make a decision.要是經(jīng)理在這兒，他也許會作出決定。If she hadn’t taken your advice, she would have made a bad mistake.她要不是聽了你的勸告，就要犯大錯誤了。(3)與將來事實(shí)相反，或?qū)聿惶赡馨l(fā)生，或說話人主觀上不希望發(fā)生If I were to do it, I would do it in a different way.要是我來作這件事，我會用另一種做法。If he should fail, we would encourage him to try again.萬一他失敗，我們就鼓勵他再試一試。因此，主句和從句的謂語動詞要根據(jù)各自的不同時間選用適當(dāng)?shù)奶摂M語氣形式，其形式依據(jù)時間的不同仍然遵循表1給出的規(guī)則。（從句發(fā)生在過去，主句發(fā)生在現(xiàn)在。（從句發(fā)生在現(xiàn)在，主句發(fā)生在將來。（從句發(fā)生在過去，主句發(fā)生在將來。這時had, should, were要移到主語前面，形成倒裝。例如：Had he not been ill, he might have e.要不是他生病了，他是會來的。Were I to do it, I would do it in a different way.要是我來做這件事，我會用另一種不同的方法。(6)用介詞短語表示假設(shè)條件有時可以用介詞短語做假設(shè)條件，以取代非真實(shí)條件句中的if從句。I would have succeeded with you help.如果有你的幫助，我本會成功。But for the storm we would have been in time.要不是暴風(fēng)雨，我們原本會準(zhǔn)時（到達(dá)）的。，如果詞語動詞是be，則一切人稱均可用were。●wish后的從句 wish表示過去或現(xiàn)在未實(shí)現(xiàn)的主觀愿望，以及將來實(shí)現(xiàn)不了或很難實(shí)現(xiàn)的愿望，可以翻譯成中文：“希望”、“真希望”、“要是…就好了”I wish I knew his address.真希望我知道他的地址。（愿望與現(xiàn)在的事實(shí)相反）She wish she knew how to drive the car.她希望她知道怎樣開這輛車。（愿望與過去的事實(shí)相反）We wish we could live on the moon for a few days in the future.真希望我們將來能在月球上住幾天。例如：I wish I were young. 我真希望我還年輕。（愿望與當(dāng)時的事實(shí)相反）注意2. 在動詞hope后要用陳述語氣。意義與用法和I wish基本相同。If only I had more time to think about it.但愿我有更多的時間考慮它。If only he had taken