And the fundamental problem of coming to terms with a past that cannot be undone.

以及难以同无法挽回的那段过去和解的根本问题。

Well, " if" with a past verb. That's talking about imaginary situations now or in the future.

嗯，“if" 加上一个过去式的动词。这是在谈论现在或将来的想象情况。

So, if you see " if" with a past verb, it just means it's not real, the situation.

因此，如果你看到“if”加上一个动词过去式，它只意味着那不是真实的情况。

If you still struggle with a past simple tense or present simple, do not go and learn the perfect tenses.

如果你还在纠结于一般过去时或一般现在时，那就不要去学完成时了。

The other common possibility is to write sentence fragments starting with a past simple verb.

另一种常见的可能性是以过去的简单动词开头写句子片段。

So, you see " if" with a past verb just means an imaginary situation, happening now or in the future.

因此，“if”加上动词过去式只意味着一个想象的条件，发生在现在或未来。

Using 'must' with a past meaning is only possible if you are using 'must' to make deductions.

仅当您使用“必须” 进行推论时， 才可以使用具有过去含义的“必须” 。

I'm gonna prompt you with a future 'if' clause and you can finish the sentence with a past result in the main clause.

我会给大家一个将来的“if”从句，然后用主句的过去结果来完成这个句子。

The imaginary situation has " if" with a past verb and the imaginary result has " would" and the verb is in the infinitive form.

想象的条件是“if”加上动词过去式，而想象的结果是“would”加上动词不定式。

The question has to do with the difference between the verb " to have" and the verb " to be" with a past participle.

这个问题与动词“to have”和动词“to be”与过去分词的区别有关。

And the three most commonly used mixed conditional sentences are simply a past action with a present result, a present condition with a past result, and a future action and the past result.

过去的行动和当前的结果，当前的条件和过去的结果，以及未来的行为和过去的结果。

We've got our " if" with a past perfect that describes a different past situation that we imagined, because it's not real and in the past, and the results of that not real imaginary past situation is this.

“if”加过去完成时，用于描述一个我们想象不同的过去的情况，因为它不是真实的，而且是过去的，由此得出的那个不真实的、想象的结果是这个。