Look at the groups of words below. Do you know Exercise which are sentences and which are not? Put a checkmark in the space next to sentences, and an \( X \) next to other word groups. 1 Mrs Chen is a good teacher: 2 not well today \( \square \) 3 Do the work yourself. 4 How are you? \( \square \) 5 basic rules of grammar 6 bread and butter 7 Welcome to the National Zoo. \( \square \) 8 brush his feeth 9 toys in the box \( \square \) 10 more than one 11 What is the time now? \( \square \) 12 Sit down! 13 Please come here.

Below is a list of the word groups with a check mark (✓) next to those that are complete sentences (including questions and imperatives) and an X next to those that are only phrases or fragments. 1. Mrs Chen is a good teacher:    ✓   • Although the colon is a bit unusual, it is a complete thought with a subject and a predicate. 2. not well today            X   • This is an incomplete phrase; it lacks a subject and a complete predicate. 3. Do the work yourself.       ✓   • This is an imperative sentence with an understood subject (“you”). 4. How are you?             ✓   • A complete question. 5. basic rules of grammar       X   • This is just a noun phrase, not a sentence. 6. bread and butter          X   • A phrase (a collocation), not a sentence. 7. Welcome to the National Zoo.    ✓   • An imperative sentence that welcomes someone (the subject “you” is understood). 8. brush his feeth            X   • This appears to be an incomplete imperative (also note the misspelling “feeth” instead of “teeth”) and lacks the proper structure for a complete sentence. 9. toys in the box            X   • A simple noun phrase, not a sentence. 10. more than one             X   • Another phrase rather than a full sentence. 11. What is the time now?       ✓   • A full interrogative sentence. 12. Sit down!              ✓   • An imperative sentence with the understood subject. 13. Please come here.          ✓   • A polite imperative sentence. Each group marked with ✓ is a complete sentence, and each marked with X is not.