亚洲欧美精品沙发,日韩在线精品视频,亚洲Av每日更新在线观看,亚洲国产另类一区在线5

<pre id="hdphd"></pre>

  • <div id="hdphd"><small id="hdphd"></small></div>
      學(xué)習(xí)啦 > 優(yōu)秀作品專欄 > 英語(yǔ)學(xué)習(xí) >

      英語(yǔ)時(shí)態(tài)學(xué)習(xí):since謂語(yǔ)動(dòng)詞的時(shí)態(tài)

      時(shí)間: 家志1175 分享

        學(xué)習(xí)啦:當(dāng)since表示時(shí)間,謂語(yǔ)動(dòng)詞的時(shí)候,since的時(shí)態(tài)應(yīng)該怎么表達(dá)?下面我們一起看看這篇《since謂語(yǔ)動(dòng)詞的時(shí)態(tài)》。

        一般情況下,since短語(yǔ)和since從句表示時(shí)間時(shí),通常句子(或主句)謂語(yǔ)動(dòng)詞用完成時(shí)。但是,在以下情況下,since短語(yǔ)與since從句表示時(shí)間時(shí),句子(或主句)謂語(yǔ)動(dòng)詞可以不用完成時(shí):

        (1)句子(或主句)謂主動(dòng)詞與情態(tài)動(dòng)詞連用時(shí),不用完成時(shí)。比如:

        Since the doctor operated on his throat, the boy can speak clearly.

        自從醫(yī)生給這男孩做過(guò)喉部手術(shù)后,他就能清楚地講話了。

        He can only stay in bed since he fell ill.

        他自從生病后,就一直臥床不起了。

        (2)當(dāng)since引出的狀語(yǔ)修飾一個(gè)后置定語(yǔ)從句時(shí),句子(或主語(yǔ))不用完成時(shí)。比如:

        People were evacuated from the territories occupied (=which had been occupied) since the beginning of the war.

        人們被迫撤出了戰(zhàn)爭(zhēng)開(kāi)始以來(lái)就被占領(lǐng)的領(lǐng)土。

        The couple had no photo of themselves taken (=which had been taken) since they got married.

        那對(duì)夫妻自從結(jié)婚后就沒(méi)照過(guò)相。

        (3)句子(或主句)謂語(yǔ)是be動(dòng)詞,并且表示時(shí)間概念時(shí),句子(或主句)謂語(yǔ)動(dòng)詞用一般現(xiàn)在時(shí)比用現(xiàn)在完成時(shí)普遍。比如:

        It is (has been) three years since he joined the army.

        他參軍已經(jīng)3年了。

        It is (has been) a long time since we parted.

        我們已分別久了。

        (4)有時(shí)句子(或主句)謂語(yǔ)動(dòng)詞be也可用過(guò)去式,此時(shí)since從句的謂語(yǔ)動(dòng)詞常用過(guò)去完成時(shí)。比如:

        It was two years since we had parted.

        我們分手有2年了。

        It was ages since I had had my last meat.

        我前一頓飯已經(jīng)吃過(guò)好長(zhǎng)時(shí)間了。

        (5)當(dāng)所述是事實(shí),或一種長(zhǎng)期不變的習(xí)慣時(shí),句子(或主句)謂語(yǔ)動(dòng)詞常用一般現(xiàn)在時(shí)。比如:

        Ever sincehe recovered, he goes for an outing every other morning.

        自從他康復(fù)后,每隔一天早晨他都要到郊外遠(yuǎn)足一次。

        My mother feels a lot better since she took the medicine.

        自從我母親服過(guò)那藥后,她感覺(jué)好多了。

        本文載自微信公眾號(hào)“英語(yǔ)語(yǔ)法學(xué)習(xí)”。本文已獲轉(zhuǎn)載授權(quán),版權(quán)歸作者所有,如需轉(zhuǎn)載,請(qǐng)聯(lián)系原微信公眾號(hào)“英語(yǔ)語(yǔ)法學(xué)習(xí)”。

        公眾號(hào):英語(yǔ)語(yǔ)法學(xué)習(xí)

        本文為原創(chuàng)文章,版權(quán)歸作者所有,未經(jīng)授權(quán)不得轉(zhuǎn)載!——學(xué)習(xí)啦


      3943103