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ad e here yesterday, he would have seen his old ,就會看見他的老朋友。通過句子意思,看假設(shè)的條件是否能夠?qū)崿F(xiàn),能夠?qū)崿F(xiàn)是真實條件句,不能使用虛擬語氣 。②與現(xiàn)在事實相反。也就是: ? ①與過去事實相反,在從句中用過去完成時形式表示。 二、虛擬語氣在 if 引導(dǎo)的條件句中的用法: ? (一 )、表示與現(xiàn)在事實相反的情況。 (事實上時間不允許 ) ? it weren’ t snowing, we wouldn’ t stay in the house. ? 要是現(xiàn)在不下雪的話,我們就不會待在屋里。 )(從句用過去式動詞 had,主句 用動詞原形 study) ? 10. If she knew English, she would not ask me for help. ? 如果她懂英文,她就不必要我?guī)土恕?(事實上你邀請了我 ) ? ⑷、 If it hadn’ t been for your help, I shouldn’ t have finished this work on time. 要是沒有你們的幫忙,我就不會按時完成了這項工作。 (事實上我不是 ) ? ⑻、 If you had studied harder last term, you could have passed exam.(從句動詞用 had studied, 主句動詞用have passed)如果你在上個學(xué)期用功一些,你就會在考試中過關(guān)了。 ? (三 )、表示與將來事實相反的虛擬條件句 (對將來的事實實現(xiàn)的可能性不大 ) ? 從句: If + 主語 + should (或 were to) + 動詞原形 +…… ? 主句:主語 + would (could, should, might) + 動詞原形 +…… ? ⑴、 If I were to work at this problem, I would do it in another ,我會用另外一種方法的。 (根據(jù)天氣情況,明天不可能下雨 ) ? ⑸、 If he should e, I could ask him for some ,我就能夠向他請教。 ? ⑼、 If he were here, I would give him the books.(從句動詞用 were, 主句動詞用 give)如果他在這兒,我可能會把書給他。t 39。t go unless Tom ___. invited be invited invited doe