Breakdown of Мне холодно, потому что в костре нет пламени.
я
I
потому что
because
в
in / to (direction)
нет
there is no / is not present
Questions & Answers about Мне холодно, потому что в костре нет пламени.
Why is the word for flame пламени instead of пламя?
It is in the genitive case because it comes directly after нет (there is no). Пламя (flame) is one of the special neuter nouns ending in -мя. When these nouns change into most other cases, they insert the special suffix -ен- before the case ending. Combined with the genitive ending -и, you get пламени.
Is -и the standard genitive ending for neuter nouns?
No, it isn't! Regular neuter nouns usually take -а or -я in the genitive (for example, окно becomes окна). The special -мя nouns act as exceptions. After adding the -ен- suffix, they take the ending -и for the genitive, dative, and prepositional cases.
Why is the word for campfire spelled костре instead of костёре?
The dictionary form is костёр, but the ё here is a "fleeting vowel." Whenever you add a grammatical ending to this word—like the prepositional -е used here to mean in the campfire—that middle vowel drops out entirely, leaving костре.
Why does the sentence start with мне (to me) instead of using the normal word for "I" (я)?