Teacher Discussion Forums

Smoke may damage your health. Smoke can damage your health. The nurse has to take his temperature at midnight. The nurse must take his temperature at midnight. Sorry, I must leave now. Sorry, I should leave now. Sorry, I ought to leave now. You shall finish it before you leave. You will finish it be...

One of my students asked me the following question. (i) a. After Peter was on the beach, he had a bad sunburn. b *After Peter was not on the beach, he rode his bike back home. c *After Peter did not ride his bike to the seaside, he went to the beach. (ii) a. As soon as Peter reached the beach, he to...