The use of "dozen"

[renzheng04]

Hello teachers,

I ‘ve got a problem with the use of the word “dozen”.I am looking forward to your help.

Please, tell me which setence is right.

1-There are eight dozen such books here.
2-There are eight dozens such books here.

3-I only need two dozen these books on this shelf.
4-I only need two dozens these books on this shelf.

Thanks a lot.

[engmaj08]

Here are the sentences you asked about.


1-There are eight dozen such books here.
2-There are eight dozens such books here.

3-I only need two dozen these books on this shelf.
4-I only need two dozens these books on this shelf.

I only need two dozen of these books. (corrected) Since the words two and eight imply that there are more than one dozen the plural form "dozens" is not needed. An example using the word dozens would be, "There are dozens of clouds in the sky". The sentence does not state how many dozen there are so the plural form is used in this example.

[renzheng04]

Thanks a lot for your help,but more question :

Are all the 4 sentences below correct?



1-There are eight dozen such books here.
2-There are eight dozen of such books here.

3-I only need two dozen these books on this shelf.
4-I only need two dozen of these books on this shelf.

Thanks.

[Anglika]

Thanks a lot for your help,but more question :

Are all the 4 sentences below correct?



1-There are eight dozen such books here.
2-There are eight dozen of such books here.

3-I only need two dozen these books on this shelf. I only need these two dozen books on this shelf
4-I only need two dozen of these books on this shelf.

Thanks.

.

[renzheng04]

Thank you very much for your short but very clear explanation.