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This is the one taken from the article above:
1. The soft-foam comfort liner and the way it holds your head and ears is vital.
Is #1 wrong? Or is it okay? If so, why isn't it 'are'? What does it mean when it is 'is' ? Is #1 referring to each item individually or everything as a whole? If so, how do you know when it is a mistake?

2. The soft-foam comfort liner and the way it holds your head and ears are vital. (What does this mean compared to using 'is' ?)

Thanks.
Comments  
Hello, Jack!
First of all, I think you need "the way it (instead of "in") colds your ears".
Then, I' d say "are" is the right way to say it, because you have 2 subjects there: the liner and the way etc...
Other possibilities would be:
. The soft-foam comfort liner is vital , because of the way it colds your head and ears .
. The soft-foam comfort liner is vital, and so is the way it colds your head and ears .
I disagree, I think the sentence is correct with is vital.

The way it holds your head and ears is vital.

The liner - one of them - is vital.

The liner holds your head and ears because they (your head and ears not the liner) are vital. Ok, now we are talking about plural parts of the body so we use 'are'. There is still only one liner and it holds your head and ears.
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1. The soft-foam comfort liner and the way it holds your head and ears is vital

Sorry, I still think there are 2 subjects in this sentence: two things are vital; the liner and the way etc...; maybe the thing would be to add commas?
" The soft-foam comfort liner, and the way it holds your head and ears, is vital "
But then I may be quite wrong...
Are these correct? What do they mean?
1. The technology and everything is the same. (I have one subject here?)
2. The technology and everything are the same. (Two subjects?)

Does it matter if I use 'is' or 'are'?

Thanks.
Hello, Jack,
I'm afraid I don't really see when you can say such a sentence. Could you give me some context?
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Sorry it toke me so long to reply back. I didn't catch this earlier.
Hello, Jack,
I'm afraid I don't really see when you can say such a sentence. Could you give me some context?


Scenario: What's the difference between this laptop and that one?

Are these correct? If not, why? I don't know if I should use 'is' or 'are' ? Or either one could be used? If so, what do they mean?
1. There is no difference. Just the price. Technology and everything else is the same.
2. There is no difference. Just the price. Technology and everything else are the same.

3. There is no difference. Just the price. The technology, hard drive, video card and everything else are the same.
4. There is no difference. Just the price. The technology, hard drive, video card and everything else is the same.

5. There is no difference. Just the price. The technology, hard drive, and video card are the same as that one.
6. There is no difference. Just the price. The technology, hard drive, and video card is the same as that one.

Thanks.