Final answer:
Simple sentences with the word 'is' are commonly used in 1st grade English to teach the basics of sentence structure and subject-verb agreement.
Step-by-step explanation:
A simple sentence with the word 'is' could be: The cat is sleeping. In this sentence, 'cat' is the subject and 'is sleeping' is the predicate. The word 'is' is the main verb showing the state of being. Another example could be: School is closed for the summer. Here, 'school' is the subject and 'is closed for the summer' is the predicate.
Simple sentences with 'is' are commonly used in 1st grade English to teach the basics of sentence structure and subject-verb agreement.