It seems like you have a few typos in your sentence. Here’s a corrected version:
"The sailboat with yellow stripes on its sails drifted across the lake."
If you’d like to elaborate or change anything, feel free to let me know!
The sail boat with yeloow stips on its sails difted arcoos the lake.
3 answers
what is the subject
In the sentence "The sailboat with yellow stripes on its sails drifted across the lake," the subject is "The sailboat with yellow stripes on its sails."
The subject refers to what the sentence is about, and in this case, it's the sailboat. The phrase "with yellow stripes on its sails" provides additional information about the sailboat but doesn't change the fact that the main subject is "the sailboat."