Hi Pleasehelp I know which airline it is already. This is OK. You could also use "what" instead of "which". I know what airlines it is already. To me, the use of the plural ("airlines") would be a completely

Hi badgrammar Strictly, possession with non-human nouns is correctly indicated by of which. However, whose is so much simpler that it is often acceptable to use it in place of of which. This is a matter of personal judgement, but

They are very odd statements, hence the grammar also appears odd. Any native would say ' Green cars '.

Welcome to EF, badgrammar! I hope you'll soon be able to change your screen name to Good Grammar. It is correct to use the possessive form whose as a relative pronoun whenever a possessive form is needed: This house, whose windows are shut,

is it ok to write "cars , whose colors are green" or "cars of which the color are green"

Hello, Pleasehelp, Does the sentence above mean what I think it means? - correct Or Does the sentence above means what I think it means? - incorrect By the way, it is not a question of plurality. If your original sentence, namely, The sentence

Does the sentence above mean what I think it means? Or Does the sentence above means what I think it means?

There is no way of judging which is more appropriate; there is no context for your sentences. However, since the verb in #2 is 'are', you must use a plural form: 'contents' or 'contexts'.

Hi uktous I would probably say: I needed to write a report for each student according to their (i.e. his or her) level of understanding'. The trouble with this kind of contrived 'gender-neutral' sentence is that

Is what ever plural? Yes. What are your favorite colors? CJ