Here are some grammar exercises on ellipsis and substitution in PDF format:

  1. I lost my old keys, so I bought new keys. ➔ I lost my old keys, so I bought new ones.
  2. This red apple is rotten; can I have a green apple? ➔ This red apple is rotten; can I have a green one?

A well-constructed PDF cycles back to these errors in review sections.

To practice ellipsis and substitution, you can use the following exercises designed to help you omit or replace repetitive words to make sentences more concise and natural Exercise 1: Ellipsis (Omitting Words)

If you have a Scribd account, these documents offer more extensive workbooks: Scribd - Ellipsis & Substitution Workbook

Grammar Reference and Practice via Rafa's English Page: Includes exercises on reduced infinitives and using "so" or "not" in responses. Key Concepts Covered These worksheets generally help you master:

I don't like horror movies, and my brother doesn't like horror movies either.My brother doesn't ________.