I'm looking for an easy way to explain the grammar in these two sentences
- I'm eating an apple
- What I'm eating is an apple
What are the grammatical terms or ways of explaining these two? I want to explain this grammar point in another language, so I want to know a way to explain the difference between these two. The only explanation I could come up with is, the 1st one is focusing on the verb and the 2nd one is focusing on the object. What are the grammatical terms for these two concepts?