By the time you arrived at the scene, the meeting had been over

[neb090]

1. By the time you arrived at the scene, the meeting had been over.
2. By the time you arrive at the scene, the meeting will end.
3. By the time you arrive at the scene, the meeting will have been coming to an end.

Are the three sentences grammatically correct?

 

[Tarheel]

1. No.
2. No.
3. No.

Try:

By the time you arrive at the scene the meeting will be over.

Or:

By the time you get there the meeting will be over.

 

[neb090]

1. No.
2. No.
3. No.

Try:

By the time you arrive at the scene the meeting will be over.

Or:

By the time you get there the meeting will be over.

For 1,2 and 3 my English textbook says when using this sentence structure, it can be:

1. By the time + S + past tense, S + past perfect tense
For example: By the time we arrived at the train station, the train had left.

2. By the time + S + present tense, S + future tense
For example: By the time you read this letter, I’ll be in Chicago.

3. By the time + S + present tense, S + future perfect progressive tense
For example: By the time you come home, we will have been building the new house for a year.

 

[Rover_KE]

For 1,[space]2 and 3 my English textbook says ...

After 164 posts, @neb090, you must be aware that we need the title and author* of any book you quote from in post #1 of any new thread.

* translated into English characters when necessary

 

[jutfrank]

For 1,2 and 3 my English textbook says when using this sentence structure, it can be:

1. By the time + S + past tense, S + past perfect tense
For example: By the time we arrived at the train station, the train had left.

2. By the time + S + present tense, S + future tense
For example: By the time you read this letter, I’ll be in Chicago.

3. By the time + S + present tense, S + future perfect progressive tense
For example: By the time you come home, we will have been building the new house for a year.

That's right. The problem is that your sentences don't make sense because of the verb phrases you're using in each of the second clauses.