【正文】
terday, I should / would have told him about it. 含義: He did not e yesterday, so I did not tell him about it. If he had not been ill and missed many classes, he would have made greater progress. 含義: He was ill and missed many lessons, so he did not make greater progress. 句型:條件從句 主句 一般過去時 should+ 動詞原形 were+ 不定式 would + 動詞原形 should+ 動詞原形 If you succeeded, everything would be all right. If you should succeed, everything would be all right. If you were to succeed, everything would be all right. 混合條件句 主句與從句的動作發(fā)生在不同的時間,這時主,從句謂語動詞的虛擬語氣形式因時間不同而不同,這叫做混合條件句。 If you had asked him yesterday, you would know what to do now. (從句與過去事實相反,主句與現(xiàn)在事實相反。) If it had rained last night (過去 ), it would be very cold today (現(xiàn)在 ). 本資料來源于大家網(wǎng)高考英語論壇 更多精品盡在大家網(wǎng)高考英語! 虛擬條件句的倒裝 虛擬條件句的從句部分如果含有 were, should, 或 had, 可將 if 省略,再把 were, should或 had 移到從句句首,實行倒裝。 Were they here now, they could help us. =If they were here now, they could help us. Had you e earlier, you would have met him =If you had e earlier, you would have met him. Should it rain, the crops would be saved. =Were it to rain, the crops would be saved. 注意: 在虛擬語氣