'worth' usage

[marciobarbalho]

Please, teachers, could you tell me if there's a difference between these sentences?
If so, could you gimme some explanation? Thanks in advance.

1) It is worth a house. These gifts are worth a house.
2) It worthes a house. These gifts worth a house.

what about these ones:

1) It is worth nothing. "It" is very important.
2) It worths nothing. "It" is not important at all.

Thanks

[oregeezer]

The first example is correct English in both examples.
1) It is worth a house, These gifts are worth a house. BOTH are correct; the first
sentence refers to a single thing (IT); the second to multiple things (These).
2) It worthes a house. (No such word as 'worthes')
These gifts worth a house. (Sentence fragment- no verb)
3) It is worth nothing. "It" is very important. BOTH are correct: the second sentence
has quote marks(" ") around the word IT. This seems to be a case of refering to
the word "IT". The meaning of the two sentences is an example of OPPOSITES.
4) It worths nothing. (No such word as "worths"): "It" is not important at all. Correct
grammar for 'The word "it" is not an important word.'
Hope this helps.
Good Luck

[marciobarbalho]

thank you oregeezer, but... Can't 'worth' be a verb?

'It worths nothing' sounds good.

Please, could you gimme some more detailed explanation on this, I am afraid the coin hasn't dropped yet about the 'worth' usage. Actually, I guess those sentences are all correct, right? If so, I'd like to know the differences between them, let me put it on this way:
Is there a difference between these senteces?

It is worth a penny.
It worthes a penny.

Thank you in advance.