Interested in Language
- Having eaten my breakfast, I watched TV.
- After eating my breakfast, I watched TV.
- I watched TV, after I ate my breakfast.
Do they all have same meanings?
Are they grammatically correct?
Are they natural and commonly used?
Aamir the Global Citizen
They all mean the same but you don't need the comma in number 3.
You can also say "I watched TV after eating my breakfast". Also note that you could remove "my" from all the examples and the meaning would not change.
With 2 and 3, you could shorten them further by simply using "after breakfast".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.