* "I am" is a very common phrase: "I am happy to see you."
* "I" as the subject of a sentence: "I love to read books."
* "Is" as a linking verb: "The sky is blue."
* "Is" in a question: "Is it raining outside?"
* "I" and "is" in a complex sentence: "I know that the earth is round."
Let me know if you'd like more examples or have a specific context in mind!