"Is there thunder?"
Translation:A bheil tàirneanaich ann?
I've noticed that "i" is used when using an adjective, e.g. "Is she/it CLOUDY?", or "It/she is SUNNY".
The "i" is NOT used when using a noun, e.g., "There is THUNDER" or "There is no SNOW". However, when using a noun, the word "ann" follows the noun, e.g., "Tha tàirneanaich ANN" and "Chan eil sneachd ANN".
So it seems that either "i" or "ann" is used, but not both together.
Generally, that’s close. See, the word i or e is a pronoun, so it is the
subject of the sentence, and it is described by adjectives, such as cloudy, wet, cold, sunny, etc.
In the sentences that, as you say, are asking about nouns such as thunder, rain, snow, then those nouns are the subject and so there is no need for any pronoun i/e.
Because the subject of the sentence isn’t “weather”; it’s “thunder”.
The question, as you can see above, is “Is there thunder?” That is, “does thunder exist?”
There’s nothing in the sentence that a pronoun i would express. The verb is a bheil, the subject is tàirneanaich, ann is an adverb.