Inversion

Adverbs of frequency with a negative meaning: never/hardly ever/rarely/seldom e.g. Rarely had the kids been so excited.

Not only..., but also... - when not only refers to the verb or the object of a sentence e.g. Not only does she play the piano, but she also paints beautifully.

little, neither, never again, never before, nowhere, so e.g. Never again will we book a holiday through that travel agency.

not for one moment, on no account, under no circumstances

e.g. Not for one moment did I doubt your dedication.

hardly / scarcely ................. when

no sooner...................than

not until

only after / by / if / when

only on one occasion

e.g. Not until she arrived in Tokyo did she realise she had left the documents at home.