假設語氣現在式倒裝句?

「假設語氣現在式」是所有的動詞都要用「原形動詞」。如：
God "bless" you! (不是blesses)
If any person "be found" guilty, he shall have the right of appeal.（不是is found)

假設子句中使用「假設語氣現在式」屬於「舊式用法」，現代英語都用「直述語氣」來代替了。如：If it is rainy tomorrow, I will stay at home.

If it be rainy tomorrow, I will stay at home.（假設語氣現在式，舊式用法）
=假如明天下雨，我會呆在家裡。

句子倒裝有強調的作用，所以下面這句話可能造成誤解：
Be it rainy tomorrow, I will stay at home.=就算明天下雨，我還是要呆在家裡。（這句話的邏輯好像不太合理？）

Be it ever so humble, there's no place like home.=不論家是多麼簡陋，沒有地方比得上它。

假設法的省略（在文言中，會去掉if，句子倒裝）：
If I had been there, I would have helped you.
= Had I been there, I would have helped you.

If he should come, I will let you know.
= Should he come, I will let you know.

If I were rich, I would go abroad.
= Were I rich, I would go abroad.

Types of conditional clause probable involoved"If-clause"should + infinitive , past ,only in rare case---->Main clause--present
eg:-"If clause"---Be it rainy tomorrow<---> If the weather showed to be rainy tomorrow<----> If it is rainy tomorrow
"Main clause"----I will stay at home<---->I will stay on time at home.
eg:-The weather is(=will be) rainy tomorrow.
------be動詞原形(=is)取代现在式be(=will be)動詞
eg:-In supposition or unreal condition:-If I were to know the weather/Were I to know the weather eg:-If it were to rain(=If it rained) tomorrow..eg:-used with a pp to form the passive voice:-The weather is to be取代现在式be.eg:-The weather is going to be rainy tomorrow.......
-----The auxiliary verbs in the verb to be are:-am is are,was, were, be,being, been.
-----If subjunctive are to be used, only "should=should stay out of rain if I were you=were I you", "had=past tense and participle of Have" can be used:-eg:-
-----(1)Supposing that="Should" it rained tomorrow, I shall stay at home.
-----(2)If the weather had rained="Had" it rained tomorrow, I should stay at home.
-----(3)If the weather had been rainy="Had" the weather been rainy, I would have stayed at home.