Is this a good restaurant?No. / No, it is not. / No, it is not a good restaurant.Are these islands Greek?Yes. / Yes, they are. / Yes, these islands are Greek.Was his idea interesting?No. / No, it wasn’t. / No, his idea was not interesting.Were they happy?Yes. / Yes, they were. / Yes, they were happy.Note that the response can be short (Yes. / No.), or long: Yes or No followed by the subject and verb.Use the verb BE with a preposition to ask Yes / No questions about a present or past location.question responseAm I at the correct location?No. / No, you aren’t.Are the keys under the books?No. / No, they are not.Was his house on an island?Yes. / Yes, it was.Were the demonstrations in the center of town?No. / No, they weren’t.Use the verb BE to ask a Yes / No question about a current activity or situation. This requires the present progressive : BE + (verb+ing).
