Inversion. Part 2. Conditionals. so & such

to add emphasis

If you encounter an alien, do not attack it. -> 

Should you encounter an alien, do not attack it.

If you get too close to a black hole, it sucks you in. ->

Should you get too close to a black hole, it sucks you in.

SHOULD + SUBJECT + MAIN VERB (infinitive) + COMPLEMENTS, main clause

Note! Contracted negative forms are not used in inverted conditionals:

Should Batman not come, we will be in trouble. NOT: Shouldn't Batman come, we will be in trouble.

If I WERE you, I would major in quantum mechanics. -> 

WERE I you, I would major in quantum mechanics.

WERE + SUBJECT + COMPLEMENTS, main clause

If she MAJORED in physics, she could work for NASA. ->

Were she TO MAJOR in physics, she could work for NASA.

WERE + SUBJECT + MAIN VERB (to-infinitive) + COMPLEMENTS, main clause

If she had seen the documentary about Queen Elizabeth I, she would know more about her. -> 

Had she seen the documentary about Queen Elizabeth I, she would know more about her.

HAD + SUBJECT + MAIN VERB (past participle) + COMPLEMENTS, main clause

to add emphasis

SO + ADJECTIVE

She was so exhausted that she went straight to bed. ->

So exhausted was she that she went straight to bed.

SO + ADVERB

He played the tune so badly that nobody recognised it. ->

So badly did he play the tune that nobody recognised it.

The extent of the damage was such that the car was a total write-off.

Such was the extent of the damage that the car was a total write-off.

She was such a beautiful woman that I fell in love immediately.

Such a beautiful woman was she that I fell in love immediately.