高中英語 module5 grammar課件 外研版選修6-預(yù)覽頁
【正文】 have skied in the park. 注意：如果動作在進(jìn)行中，主句要用： 主語 + would+ have + 完成進(jìn)行式動詞 +…… If they had been here, he would have been speaking to them. 三 .與將來的事實(shí)可能相反 從句： If + 主語 + should (或 were) + 動詞原形 +…… 主句 ：主語 + would (could, should, might) + 動詞原形 +…… If it should rain, the crops would be saved. If he were here, I would give him the books. 注意：如果動作在進(jìn)行中，從句 (不是主句 )要用：“ If + 主語 + 過去進(jìn) 行式動詞 +…… If she were staying here now, I would let her ride my horse. 四 . 從句的 If 有時可省略，那么從句中 的動詞 (were, had, should)就得移到 主語前面： 原句： If he had tried it, he could have done it. 去 If： Had he tried it, he could have done it. 五 . 有時虛擬條件句的從句和主句地動 詞動作時態(tài)會不一致： 1) 從句表示過去，主句表示將來： If they had started the early morning yesterday, they would be here now. 2)從句表示將來，主句表示過去： If I were not to make a preparation for my experiment this afternoon, I would have gone to see the film with you last night. 3) 從句表示過去，主句表示將來： If we hadn3
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