Since is a preposition, a conjunction, and an adverb of length of time.
It can be an adverb, preposition, or conjunction, depending on how it is used in a sentence.
-adverb 1. from then till now (often prec. by ever): He was elected in 1978 and has been president ever since. 2. between a particular past time and the present; subsequently: She at first refused, but has since consented. 3. ago; before now: long since. -preposition 4. continuously from or counting from: It has been warm since noon. 5. between a past time or event and the present: There have been many changes since the war. -conjunction 6. in the period following the time when: He has written once since he left. 7. continuously from or counting from the time when: He has been busy since he came. 8. because; inasmuch as: Since you're already here, you might as well stay.
The part of speech that the word my is used as is an adjective.
"Again" is an adverb, since it describes an action.
A suffix changes a word's part of speech. For example, the word 'happy' is an adjective. But when you add a suffix, which is an ending, it can change the part of speech. Happily is an adverb. Happiness is a noun.
for
it depends what word it is it could be any part of speech depending on the sentence
I believe that 'SINCE' is a preposition
It is a verb, since it shows an action (e.g. He taunts her).
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
Normandy is a proper noun, since it is the name of a specific place.
"Again" is an adverb, since it describes an action.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word civilian is English grammar.
The part of speech for the word diplomacy is a noun.
The word speech is a noun.
The part of speech for this particular word is a noun.
The word speech is a noun.