There are certainly a plethora of transition words like: however, furthermore, nevertheless, instead, indead, etc. Except for the appearance of these words at the beginning of a sentence, their appearances in the middle of a sentence require some kind of grammatical rules, for example:
I decided to have a lunch outside; however, I restrained it due to the rainy weather.
The word "however" is put between a semicolon (;) and a comma (,). As a result, I wonder if this rule is true for other words? Even for the words, which appear in the middle of a sentence very seldom, like "furthermore, correspondingly, accordingly"? I inquire this because when I used those words in the middle of some sentences of my essay, my teacher insisted that each of those sentences should have been split into two separate sentences, owing to the fact that the transition words "furthermore, correspondingly, accordingly" are rarely seen in the middle of a sentence.