ARE SOME PREPOSITIONS COMPLEX LIKE USED IN A COMPLEX SENTENCE

Answer 1

When you type in all-caps, two things happen:

**it's harder to read, and
**it's the online equivalent to SHOUTING (considered rude behavior).

Please just type in regular mode, not with the Caps Lock feature turned on. Thanks.

Answer 2

sorry my caps was on my question is:

are some prepositions used in a complex sentence?

do they make it complex?

Answer 3

There are many subordinating conjunctions that can also be used as prepositions. What they are called in a sentence depends on how they are used.

Subordinating conjunctions:
http://grammar.ccc.commnet.edu/grammar/conjunctions.htm#subordinating_conjunctions

Prepositions:
http://grammar.ccc.commnet.edu/grammar/prepositions.htm

So ... you can say that if one of these words is followed by a clause (has a subj and verb), then it's a subordinating conjunction. If it's followed by a noun (sometimes with an adjective or two), then it's a preposition.