1. Many prepositions indicate: direction, position, or relation in time
Preposition – shows how a noun or pronoun (object of the preposition) is related to some other word in the sentence
Many prepositions indicate:
direction, position, or relation in time
Compound Prepositions – consist of more than one word
Prepositional Phrase – consists of the preposition, its object, and any modifiers
Object of the preposition – the noun or pronoun that the preposition refers to (to find ask who or what after the preposition)
Example :
The elephants ran past us, moving toward the trees within sight of our camp.
prepositions – past past whom? us
-toward toward what? trees
-within within what? sight
-of of what? camp

2. Conjunctions -
Coordinating Conjunctions – joins words or groups of words that are used in the same way
and, but, or, not, for, yet, nor, so
Correlative Conjunctions - pairs of conjunctions that join words or groups of words that are used in the same way
both…and - either…or - neither...nor
whether…or - not only...but also

3. Interjection –
Interjection – a word used to express emotion Oh! You surprised me. Wow! Am I tired! Aha, you’ve discovered the secret. Could you, well, be quiet, please?