I was reading a book during my spare time, and I came across this sentence: "Never forget that time is your enemy when it comes to closing deals." Is it grammatically correct to start off a sentence like this? (e.g. never forget that, please note that, blahblah that, etc.)
I believe that introductory clauses can forgo punctuation, at least in fiction, if the Author deemed it necessary. There are a lot of authors who don't always separate the introductory clause. It's also dependent on flow too, how the author wants the sentence read, etc..
^ Agree The sentence as is puts the emphasis on 'time is your enemy...". The emphasis (or attention grabber) could be on "Never forget" if there were a dash after it.
Sure it is. You can consider that the verb "forget" as being the main verb of the sentence. That is, the head verb of the main clause of that sentence is "forget". Your sentence is structured similar to: Never forget to lock up when you leave. Never forget your family history. Never forget your past. Never forget to wear clean underwear in case you get in an accident. Never forget that cats rule and dogs drool. Basically, it is structured with the addressee (the hearer/reader) as sort as the implied grammatical subject of the main clause (of the sentence), with "forget" as the head verb of the main clause, with the stuff after the verb "forget" as the verb's complement. That is: -- Never forget [the verb's complement].and so, your sentence has that same structure: -- Never forget [that time is your enemy when it comes to closing deals].where the phrase "that time is your enemy when it comes to closing deals" is referred to as a content clause. (Just practicing my grammar. )
It is grammatically correct. But even if it's not, you can break rules for effect anytime. So by that knowledge, there are no rules.
It sounds like dialogue to me. Is it dialogue? But whether its dialogue or not IMO its grammatically correct.