Subjunctive Mood is totally What?

First of all, take a look at the Venn's Diagram of Subjunctive Mood.

There are two big groups, Hypothetical Conditionals and Recommendations, and totaly they have five types in them.

【Hypothetical Conditionals】

(1) Conditionals Zero～5th (If-clause, Result-clause) : Real & Un-Real World, 6 Types

(2) I wish, If only, I'd rather, etc : Un-Real World, 1Type

(3) I hope, Probably, I'm sure ,etc : Real World, 1Type

【Recommendations】

(4) Event Related Advice(I reccomend that) : Real World, 1Type

(5) Time Related Advice (It's time that): Real World, 1Type

Already, I made the article about Hypothetical Conditionals (1) to (3), please see here.

In this article, I will explain two types of Recommendations.

Event Related Advice (I recommend that ～, etc) expresses "should" only

Since these syntactic expressions are almost obsolete, there are few situations in which you should use them in compositions, so it's sufficient to understand them just as knowledge.

However, what should be noted here is that even though the meaning is only "should", the intensity varies depending on the expression.

Time Related Advice (It's time that ～) expresses Irritation(Urgency)

The expression of "It's time to" is confusing, but it is actually just Simple Sentence (SVC structure) and is Indicative Clause also. So, it is just informative temporal information in an emotionally Neutral state.

Urgency=0% : It's time to go to bed. → Time for bed.

However, if you are getting irritated, these expressions by Complex Sentence, It's time (that) + Subjunctive Clause with SVO (simple past tense) are selected.

Urgency=20% : It's time you went to bed. → You should head to bed.

Urgency=60% : It's about time you went to bed. → You should head to bed now.

Urgency=80% : It's high time you went to bed. → You must head to bed now.

Ultimately, your irritation become Max, then Imperative Clause is released.

Urgency=100% :  Go to bed!

Note : The after-arrow expressions are verified by Chat GPT or else, but think it's an example.

Note : Intensity, Urgency [%] are verified by Chat GPT or else, but think it's an example.