This document outlines several cases where inversion of subject and verb is used for emphasis in formal English, including after phrases like "not only", "not until", and "never". It also provides examples of how to use inversion with phrases like "no sooner...than", "only then", "only when", "rarely", and "hardly". Finally, it discusses how to structure conditional sentences in English, including examples of the first, second, and third conditional forms.

2.  Inversion of verb and subject is done for
emphasis in FORMAL English after:
 NOT ONLY: Ex.: Not only is the English
teacher boring but he’s also stupid.
 NOT UNTIL: Ex.: Not until you start
studying seriously, will you really learn.
 NEVER: Ex.: Never would I have imagined
how difficult the examen would be.
 NO SOONER……..THAN: Ex.: No sooner had
he opened the door, than he heard a strange
noise.

3.  We must use the auxiliaries:
Ex.: Not until I saw the exam, did I realize
that I would fail.
Not only do I study English every day but I
also watch films in English.

4.  ONLY THEN:
Ex: Only then did he understand he loved him.
 ONLY WHEN:
Ex.: Only when you start studying a foreign
language, do you realize how difficult it is.
 RARELY:
Ex.: Rarely have I read such a stupid book
before.
 HARDLY:
Ex.: Hardly had I opened the door when the
phone rang.

5.  In the first conditional:
Ex.: Should you have any further questions, do
not hesitate to contact me=If you have any
further questions…...
 In the second conditional:
were+Subject+infinitive with –to:
Ex: Were we to pass the exam, we would have a
B2 certificate= If we passed the exam……
 In the third conditional:
Ex.: Had I known you were in hospital, I would
have visited you= If I had known you were in
hospital, I would have visited you.