条件句类型及用法有哪些 _类型

条件句有真实条件句和非真实条件句两种，真实条件句所表的假设是可能发生或实现的，句中的条件从句与结果主句皆用直陈语气。

如:
（1）Oil floats if you pour it on water. 你如把油倒在水里，油就浮起来。

（2）If I have enough money next year ,I will go to Japan. 假若明年我有钱，我就去日本。非真实条件句所表的假设则是不可能或不大可能发生或实现的，句中的条件句与结果主局皆须用虚拟语气。现将用于非真实条件句中的虚拟时态列表如下(注：美国的结果主局，不管什么人称皆常用 would)：与现在事实相反：从句，If I （we，you ,he ,they ）+动词过去式（be 的过去式用 were）；结果主句：(I /we +should, you/he/they +would)+动词原形，如： If we left now ,we should arrived in good time. 假如我们现在就走的话，我们就会及时到达。If I were you ,I would refuse the money. 假如我是你的话，我就不会要那钱。Even if he had the money ,he wouldn`t buy it. 他即使有钱也不会卖它。与过去事实相反：从句，If I （we，,he ,they ） you +had +过去分词；结果主句： /we +should, (I you/he/they +would)+have +过去分词，如： We would`ve dropped by if we had had time. 假若我们有时间的话，我们就会顺道拜访了。I wouldn`t have known what these were for if I hadn`t been told. 假如别人不告诉我，我就不会知道这些东西是干什么的了。但虚拟式 were 也可表示与过去事实相反。If I were not busy ,I would have come . 假如我不忙，我就会来了。表过去时间的假设亦可用虚拟式，should have+过去分词。这种虚拟式所表的动作并非完全不可能发生，它只是表示一种偶然性，并常和直陈语气连用，但也可与虚拟语气连用。如： You can image what would have happened to her if she should have told the truth. If this sleeple 与将来事实可能相反：从句，I （we，,he ,they ） If you +动词过去式（be 的过去式用 were）；结果主句，(I /we +should, you/he/they +would)+动词原形。
【条件句类型及用法有哪些】