Question

The most common way to start a sentence is with a/an

Answer 1

The most common way to start a sentence is with a subject. An example would be a simple sentence "He broke the window" where "he" is the subject.

Answer 2

The most common way to start a sentence is to start with a subject. For example, the cherry popsicle dripped on my shirt. The subject is: The cherry popsicle and the predicate is: dripped on my shirt. Just remember predicate as a prediction. "Dripped on my shirt" is a prediction.