[Grammar] a huge amount of apples?

[wotcha]

1. There are a huge amount of apples.

2. There is a huge amount of water.

3. There is the huge amount of water.

4. There is huge amounts of water.

5. there is a large amount of water.


Are they all grammatical?


Thank you in advance.

 

[Tdol]

You will hear amount + plural noun, but I don't like it. 2 & 5 are the only ones I would say.