or If You say the first one is correct, that would/will mean 'would' is used when we are talking about past in the future?

IMO you could use either.

Not really, when we refer to the past in the future we use normal past forms of verbs, eg.

Can you/someone just point me the link describing the usages of would/will? I need to know the exact rules and regulations.

EDIT: Or I should search it out myself perhaps

Yeah, modal verbs are quite confusing and complex and it's best to learn them in a systematic way.
The materials on the internet don't usually cover the topic in depth.

If you can borrow (perhaps your local library) the following book, please do.
Thomson-Martinet: A Practical English Grammar
It looks a bit like a manual page, but it's very detailed and clearly explains the English grammar.
You can read it on the internet but there's something seriously wrong with this version. It's hardly
readable due to the lack of line spaces and other formatting elements.
http://www.scribd.com/doc/6661327/A-...omson-Martinet

I'd recommend getting a hard copy.

Have fun

Thanks for the effort, sycamorex, I found something interesting too: http://wsu.edu/~brians/errors/errors.html

from Nylex's signature.

You may want to take a look at http://wiki.answers.com/Q/What_is_th...the_word_would.


IMHO, neither form would raise eyebrows during everyday conversation, but 'will' would be the better choice. But context and exact phrasing has a large impact on the decision on which to use.

Hi there,

Which version sounds best:

1. Solar panels let us save between 50% and 60% of domestic hot water production related costs annually.
2. Solar panels let us save between 50% and 60% of domestic hot water production costs annually.
3. Solar panels let us save from 50% to 60% of domestic hot water production related costs annually.
4. Solar panels let us save from 50% to 60% of domestic hot water production costs annually.

Any other modifications are welcome.

Thanks

Solar panels save us from 50% to 60% of domestic hot water production related costs annually.

IMHO.

It may be even more correct to say:
Solar panels save us from 50-60% of domestic hot water production related costs annually.

But it depends on whether it's spoken or written.

It's a website.

In that case, I think "Solar panels can save between 50-60% of domestic hot water production related costs annually".

Thanks all.

This won't do! "between" needs to be coupled with "and", so you can have "save between 50 and 60 percent" or "save 50-60%"; your sentence is a classic case of changing horses in midstream.

The sentence is also made clumsy by using a huge qualifier (domestic hot water production related) before the noun, which is un-idiomatic in any language, and by redundant words. So

"Solar panels can save 50-60% of the cost of domestic hot water."

Good point on the between part. Not sure about your sentence shortening - it may be a website for a manufacturer or trade supplier.

The site is highly technical - it's a manufacturer's website.