I think cats are better than dogs.
"Than" - I am taller than Jennifer.
No. This is a sentence with only one word: "Go."
no or at least not any more than i capitalize the word sentence in a paragraph
Example sentence - I had more questions for the interviewer than he had for me.
Alex is more clever than Vice.
yes
Example sentence - His expenses were more than his income.
The word ample is an adjective and means more than enough. A sentence with this word is: There was an ample supply of food and drinks for the wedding guests.
Example sentence - Amanda is more useless than a used tissue.
You are busier than me this week.
The word 'than' cannot be the subject of a sentence on its own. However, it could form part of a noun phrase that is the subject of a sentence. For example 'Being poorer than a church mouse is not a happy situation.'
Example sentence - He knew how to quibble better than most in his efforts to deceive.