Sleep sleep sleep
in a normal life a person sleeps for about twenty-five years. but why do we sleep? the simple answer is: we don't know. we need more sleep when we are young. a baby sleeps for about ten hours. a teenager sleeps for eight and a half hours. and adult sleeps for seven or eight hours. old people need only five or six hours.
there are two kinds of sleep. when you go to sleep you go into deep sleep. your temperature falls, your body relaxes, and you breath slowly. after about half an hour you go into active sleep. this is also called rapid eye movement sleep (or rem sleep), because your eyes move. you dream in both deep sleep and rem sleep, but in rem sleep you dream in pictures. if you wake up in rem sleep you can usually remember your dream. your body spends about twenty minutes in rem sleep and then goes back into deep sleep for an hour.
do you ever talk or walk in your sleep? people sleepwalk in deep sleep and sleepwalkers do amazing things. they open doors and windows, they ride bicycles and drive cars. they cook, they take a bath or a shower (often in their pyjamas), they shave, they clean their teeth, they get dressed, they dig the garden and other things.
sleepwalkers are asleep, but they have their eyes open and they can see. they can't wake up easily. if they do, they can't remember anything. do you ever sleepwalk? are you sure? perhaps you do, but nobody sees you.
1. everyone sleeps for eight hours a night.
1) true 2) false 3) not stated
2. teenagers need less sleep than adults.
1) true 2) false 3) not stated
3. some people sleep for only one or two hours.
1) true 2) false 3) not stated
4. rem sleep is the same as active sleep.
1) true 2) false 3) not stated
5. you only dream in deep sleep.
1) true 2) false 3) not stated
6. people sleepwalk in rem sleep.
1) true 2) false 3) not stated
7. sleepwalkers can't see.
1) true 2) false 3) not stated
8. sleepwalkers remember everything they do.
1) true 2) false 3) not stated
2. 1. Look! A cat is running across the stadium! 2. She is a good pupil. She always does her work well. 3. Be quiet, please! I am (thinking about this problem. 4. I think) he will invite you to the party.
3. 1. They are having lunch, aren't they? 2. They have lunch, don't they? 3. There are apples in the basket, aren't there? 4. You think I’m wrong, don't you? 5. You think he is right, don't you?
4. 1. I like to write letters) to my (friends). 2. There were three (women) at the bus stop. 3. I never watch soap operas, but I often watch documentaries
5. 1. I have always known him. 2. Have you read Part Two? 3. She has just seen the film. 4. The Williams usually have three meals a day. 5. There is no snow in the street.
6. 1. Tim wants to come to the party. – OK. We will invite him. 2. We haven’t got any vegetables. – OK. I will buy some tomatoes. 3. Bob doesn’t understand this exercise. – OK. I'll explain it to him. 4. Nick has a headache. I'll call the doctor. 5. I can’t find my textbook. Can you help me? – OK. I'll look for it.
7. 1.They didn't send the letter yesterday. – 2.He didn't become famous. - 3.They didn't use to go there. - 4.They didn't have to take a taxi. - 8. Write sentences using used to. He used to get up at 6 o’clock. - They used to invite a lot of people. - She used to make tasty cakes. -