Sentence fragments can sound very, very silly in English. Slovenian seems to have a higher tolerance for syntax-poor snippets of language.
Though we are tempted to say, “Always use full sentences,” that would be going too far!
Instead, a simple never-rule: never start a sentence fragment with a relative clause.
Which would look and sound strange.
Here’s an example in context:
“The world is swimming in horrible movies, whether they be violent action movies or saccharine, simplistic romances. Which is not surprising, given the necessity for studios to produce in a hurry.”
If you’re really really tempted and you feel a comma just wouldn’t do your thought process justice, use a dash:
“The world is swimming in horrible movies, whether they be violent action movies or saccharine, simplistic romances – which is not surprising, given the necessity for studios to produce in a hurry.”
Jason Blake and Monika Kavalir
All tips to date…
http://www2.arnes.si/~bjason/tips%20-%202014%202015.pdf