江西成考专升本英语语法复习资料二(4)
- 来源:
- 江西成考网
- 发布日期
- 2017年04月19日
摘要: 条件是否能够实现,能够实现是真实条件句,不能使用虚拟语气;假设的条件不能实现则是非真实条件句,要用虚拟语气。 判断这个假设是与哪个事实相反。通常有三种情况:①与过去事实相反。②与现在事实相反。③与将来事实可能相反。 3、“后退一步法” 后退一步法是指在准确地判断了该句与哪一事实相反后,按虚拟语气的后退一步法处理从句谓语动词的时态。即:在非真实条件状语从句中,谓语动词按正常情况“后退一步”。也就是: ①与过去事实相反,在从句中用过去完成时形式表示。 ②与现在事实相反,在从句中
⑽、If you had got up earlier,you could have caught the train.(从句动词用had got up,主句动词用have caught)如果你起身得早一点,你就会赶得上火车了。
⑾、If it had snowed,I would have skied in the park.(从句动词用had snowed, 主句动词用have skied)如果下雪的话,我就可在公园里滑雪了。
注意:如果动作在进行中,主句要用:"主语+ would + have + 完成进行式动词 +……
⑿、If they had been here,he would have been speaking to them.(从句动词用had been, 主句动词用have been speaking)
(三)、表示与将来事实相反的虚拟条件句(对将来的事实实现的可能性不大)。其句子结构为:
从句:If + 主语+ should (或were) + 动词原形+……
主句:主语+ would (could,should,might) + 动词原形+……
例如:
⑴、If I were to work at this problem,I would do it in another way.要是我来解这道难题,我会用另外一种方法的。
⑵、If you were to do such a thing again,you would be punished. 如果你再做这样的事情,就会受到惩罚。
⑶、If I should work harder,I could make much more progress.假如我更努力学习的话,我会取得更大的进步。(事实上我不可能努力学习)
⑷、If it should rain tomorrow,I would stay at home.如果明天下雨的话,我将待在家里。(根据天气情况,明天不可能下雨)
⑸、If he should come,I could ask him for some advice.万一他来了,我就能够向他请教。(事实上他来的可能性很小)
⑹、If he came tomorrow,I wou
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