在非真实条件句中，表示与过去事实相反的假设。

If I had known the truth, I would not have said that to him.

youdao

要是他努力的话，他就会通过考试。非真实条件句。含义是。

He would pass the final exams if he worked hard.

youdao

把你说的第二种情况，推到过去不就是过去的真实条件句了吗。例如。

If he had been free, he would have asked to tell stories…

youdao

内部有效性——在条件变化的时候，其成因和结果还会是真实的么？

Internal validity - is there true cause and effect between variables.

youdao

公共真实是社会和谐必不可少的条件。

Public truth is a fundamental condition of social harmony.

youdao

条件的真实事件现场，并没有严格的再现。

The scene and conditions of the real events were not strictly reproduced.

youdao

该实验方法能够模拟真实的火灾条件，因此测试结果比较可靠。

Since it can simulate the real fire, the results are reliable.

youdao

该实验方法能够模拟真实的火灾条件，因此测试结果比较可靠。

Since it can simulate the real fire, the results are reliable.

youdao