are the following command sentences
get into the car
sit down and read your book
Yes. They are both imperative (command) sentences.
Yes, both "Get into the car" and "Sit down and read your book" are command sentences.
In English grammar, command sentences, also known as imperative sentences, are used to give direct orders, instructions, or requests. They usually begin with a verb and do not have a subject explicitly stated, as the subject is usually the person being addressed.
To identify a command sentence, you need to look for the verb (action word) that is being directed towards someone. In "Get into the car," the verb is "get," and it is telling someone to get into the car. In "Sit down and read your book," the verbs are "sit" and "read," and the sentence instructs someone to sit down and read their book.