What is Inversion? 12345678:

Practise: 123456
What are your most common Writing mistakes?
Inversion in songs:

Inversions in conditionals

It is a more formal form but the meaning is exactly the same.
Normal form
If he should call, let me know. Should he call, let me know.
If he were to ask for more money, it would be a problem. Were he to ask for more money, it would be a problem.
If she had studied more, she would have passed the exam. Had she studied more, she would have passed the exam.
Related pages:

English Grammar Reference
Zero conditional , First conditional , Second conditional , Third conditional , Mixed conditionals

English Grammar Exercises: Bruce Springsteen, If I should fall behind

Review Tenses 3 (Future Simple / Be going to))

Future Simple (I will work / Will he work? / The won’t work) is used for PREDICTIONS (προβλέψεις), WILLINGNESS (προθυμία), SUDDEN DECISIONS (ξαφνική απόφαση), PERSONAL OPINION (προσωπική γνώμη) especially with the expressions I THINK, I BELIEVE, IN MY OPINION, …

BE GOING TO + VERB (I’m going to work / Is he going to work / They are going to work) is for LOGICAL PREDICTIONS (λογική πρόβλεψη – που κάπου στηρίζεται), and PLANS / INTENTIONS (σχεδια / προθέσεις = πράξεις που έχουμε αποφασίσει να πραγματοποιήσουμε)

Review of Tenses 2 (Present Perfect – Past Simple)

Present Perfect (I have finished / Has he finished ? / They haven’t finished) : is used for experiences we have already have or  haven’t had yet.
OR : for activities that started time ago and haven’t finished yet (already, just, yet, since, for,…)

Past simpleI played / Did he play? / She didn’t play :  is used for activities we did in the past. They are finished and completed (yesterday, last Monday/week/month/year, when…, in 2000, etc)