They reaped a yield twice as much as they would have done with local strains.他们得到的产量要比 使用当地品种高出一倍。 We accomplished in an hour what it would have taken1,000 men several days to do..我们一个钟头 完成了一千个人几天才能完成的工作量。 I could continue talking about this,but we must go on to the next topic.这问题我还可以继续谈，不过 我们必须讨论下一个题目了。 Tome would have explained everything,but nobody paid any attention to him.汤姆本来会把一切解释清 楚的，但谁也不听他。 *C)“f”的省略情况：
16 They reaped a yield twice as much as they would have done with local strains. 他们得到的产量要比 使用当地品种高出一倍。 We accomplished in an hour what it would have taken 1,000 men several days to do. 我们一个钟头 完成了一千个人几天才能完成的工作量。 I could continue talking about this, but we must go on to the next topic. 这问题我还可以继续谈，不过 我们必须讨论下一个题目了。 Tome would have explained everything, but nobody paid any attention to him. 汤姆本来会把一切解释清 楚的，但谁也不听他。 C）“if ” 的省略情况：
式 句 型 N f ①Were+主语+ would 原形V 的 Adj. should 主语+ + ②Had+主语+p.p. could 略 Have p.p. might ③Should+主语+原形W 例句： Were I young,I would learn to ski. *(∈f I were young,…) *(如果我年轻，我会去学滑雪。 Had I been there,I would have helped you
17 例句： Were I young, I would learn to ski. (=If I were young, …) (如果我年轻，我会去学滑雪。 Had I been there, I would have helped you . 形 式 句 型 If 的 省 略 ①Were +主语+ N Adj. 主语 + would should could might 原形V + ② Have + p.p. Had + 主语 + p.p. ③Should + 主语 + 原形V
(=If I had been there,... *(假如当时我在那里，我一定会帮助你的)。 Should it rain,they would not come (=If it should rain,... *(万一下雨，他们就不会来了。) 条件从句中的有时候被省略；在这种场合之 下，条件从句的动词就要移到主语之前，如 上面之句型一 倒装语序。 *4)虚拟语气的几种特殊句型： *句型1：
18 (=If I had been there, …) (假如当时我在那里，我一定会帮助你的）。 Should it rain, they would not come. (=If it should rain, …) (万一下雨，他们就不会来了。） 条件从句中的if有时候被省略；在这种场合之 下，条件从句的动词就要移到主语之前，如 上面之句型——倒装语序。 4）虚拟语气的几种特殊句型： 句型1：
形式 句型 were 主语+ I wish+虚拟语气 I wish (that) 过去式V 主语+had+p.p. *例句： *I wish were rich.(但愿我很富有。) *I wish I could speak English.(但愿我会说英 语。) *I wish I knew how to do it.(但愿我知道怎样做 它。) I whish I had been in Hongkong last year. 愿我去年曾在香港。) We wish he hadn't lost it yesterday. (我们但 愿他昨天没丢失它。) 19
19 例句： I wish I were rich. (但愿我很富有。） I wish I could speak English. (但愿我会说英 语。） I wish I knew how to do it . (但愿我知道怎样做 它。） I whish I had been in Hongkong last year. (但 愿我去年曾在香港。) We wish he hadn’t lost it yesterday. (我们但 愿他昨天没丢失它。） 形式 句型 I wish + 虚拟语气 I wish (that) 主语+ were 过去式V 主语+ had + p.p
①“l wish+虚拟语气”表示“不可能实现 的愿望”。Wish后面的that常被省略，本句 型做“但愿…真希望.要是就好了” ②l wish+(were/过去式动词)，表示“现在， 不能实现的愿望。 ③I wish+had+p.p,表示“过去”不能实现 的愿望。 ④I wish=If only *句型2： Asif(=as though)+虚拟语气 句型：主语+V+了asif+ 主语+were过去式V L=as though 主语+had+p.p. 20
20 ① “I wish + 虚拟语气”表示“不可能实现 的愿望” 。Wish 后面的that常被省略，本句 型做“但愿… 真希望… 要是…就好了” ②I wish + (were/过去式动词) ，表示“现在” 不能实现的愿望。 ③I wish + had + p.p., 表示“过去”不能实现 的愿望。 ④ I wish = If only 句型2： As if (= as though)+虚拟语气 句型：主语+V+ as if + 主语+were/过去式V = as though 主语+ had + p.p