Meaning: The boy was looking at the kite and was happy.
Choice of Words: Watched means looked at the kite.
Alternative Expressions
The boy watched the kite with great delight.
Meaning: This sentence tells us that the boy is really enjoying watching the kite. He is very happy to be doing so.
Choice of Words: The boy is still the subject of this sentence, but we have added the word the to make it clear that we are talking about a specific boy. The kite is still the object of the boy's action, but we have added the word great to show that the boy is really enjoying watching it. The with still shows how the boy is watching the kite, but we have added the word delight to show that he is very happy.
With great joy, the boy watched the kite soar through the sky.
Meaning: This sentence tells us that the boy is really enjoying watching the kite fly high in the sky. He is very happy to be doing so.
Choice of Words: We have changed the order of the words in this sentence to put more emphasis on the boy's joy. The with is still there to show how the boy is watching the kite, but we have added the word great to show that he is really enjoying it. The kite is still the object of the boy's action, but we have added the word soar to show that it is flying high in the sky. The through shows that the kite is flying through the sky.