影音先锋电影观看地址:《英语语法句法窍门》之9讲:虚拟语气在条件句中的用法
《英语语法句法窍门》之9讲:虚拟语气在条件句中的用法
口诀:
过去过完①,现思过②,
将来会明:过去、were to/should+动原③。
主句三虚要判断④,
过去要用would have done⑤。
主句would+动原,
现在将来都可行⑥。
按照上面去变动,
碰到虚拟不头痛。
注:
①“过去过完”即与过去事实相反,条件从句中的谓语动词用过去完成时。例:
If you had come earlier,you would have met him.
②“现思过”即与现在事实相反,条件从句中的谓语动词用一般过去式。例:
If we had time,we would go with you.
③“将来会明”指将来会明白。“过去、were to/should+动原”表示与将来事实相反时,条件从句中的谓语动词可用动词过去式,或were to+动词原形或should+动词原形。例:
If you dropped the glass,it would break.
If it were to snow tomorrow,they would not go out.
If it should rain,the crops would be saved.
④“主句三虚要判断”即主句当中虚拟语气也有三种,要根据具体情况具体分析。
⑤“过去要用would have done”表示与过去事实相反,主句谓语动词用would(should could,might)+have+过去分词。例:
If he had seen you yesterday,he would have asked you about it.
⑥“主句would+动原,现在将来都可行”,表示与现在、将来事实相反,主句都可用would(should,could,might)+动原。例:
We would ask him if he were here now.
If it were Sunday tomorrow,I would go to see my friends there.