【正文】
主句 If+主語 + were to do sth should do sth did sth 主語 +would/ could should/ might do sth Many years later, I was sailing to Europe on a fine sailing ship across the Atlantic. For the greater part of the voyage we had pleasant weather, but towards the end of our crossing a terrible storm blew up and the ship would have sunk with all on board if it had not been for the efforts of the captain. ? What would have happened if the captain had not been on board? t ip if 與過去事實(shí)相反 : 從句 主句 If+主語 + 主語 +would/ could should/ might have done sth had done sth 一:含 IF條件句的虛擬語氣 If 條件句 主 句 past now future had + done would / could /might / should + have done did / were would / could /might / should + do did / were should do were to + do 5分鐘,你就趕上這趟車了。 If you _______ here five minutes earlier, you _______________ the bus . ,我就來幫你了 。 ’s (about/high) time +that should +V. 過去時(shí) 我們?cè)撊ニX了。 這些動(dòng)詞后面的賓語從句要使用虛擬語氣用法。 一堅(jiān)持 二命令 三建議 四要求 insist order, mand advise, suggest, propose demand , require, request, desire 注意:以上動(dòng)詞相應(yīng)的名詞構(gòu)成的名詞性從句包括主語從句,表語從句和同位語也要使用虛擬語氣。 order, advice, suggestion, proposal, demand, request, desire 注意: insist 表示 “堅(jiān)持說”時(shí) ,后面從句不用虛擬語氣 . 如 : She insisted that he had stolen her bike. Suggest 表示 “暗示” , “表明”時(shí) ,后面從句中不用虛