I need to find the complete subject and simple subject of this sentence: San Fransisco is a city in California. I put San Fransisco as the complete subject and city as the simple subject.

Oh, my! You've misunderstood subjects.

San Francisco is both the complete and simple subject in this sentence.

The rest of the sentence is the predicate. City is the predicate nominative.

To find the complete subject, you need to identify all the words that work together to describe the subject of the sentence. In this case, the complete subject is "San Francisco is a city in California."

Now, let's break it down further to find the simple subject. The simple subject is the main noun or pronoun that the sentence is about. In this case, the simple subject is "San Francisco." It is the specific name of the city being referred to in the sentence. So you are correct in identifying San Francisco as the simple subject.

However, "city" is not the simple subject in this sentence. The word "city" is part of the predicate, as it is the object that the subject "San Francisco" is being described as. The complete predicate in this sentence is "is a city in California."

To summarize:
- Complete subject: San Francisco is a city in California
- Simple subject: San Francisco

Remember, the complete subject includes all the words that describe the subject, while the simple subject is the main noun or pronoun the sentence is about.