could anyone explain how to use the word ones in our sentence..For instance, "To this end several homogenization techniques exist, ranging from the fairly abstract ones to those that are more oriented towards applications."

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Comments  (Page 2) 
Now, let's look at the word 'ones'.
Consider these examples

Example 3

Tom: Look at these red sweaters and these green sweaters. Which sweaters do you like?
Mary: I like the red sweaters.

Example 4

Tom: Look at these red sweaters and these green ones. Which ones do you like?
Mary: I like the red ones.

Example 3 sounds awkward and rather foolish to a native speaker, because there is so much repetition of the word 'sweaters'.

Example 4 sounds much more natural.

Do you feel you understand this? Do you have any questions?

ok I got it! thank you very much clive!
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