新概念二册90~91课所有答案

90课 Key to Summary writing Divers working on North Sea oil rigs are often terrified by giant fish that bump into them when they are working in deep water. These fish are not sharks or whales. On the contrary, they are favourite eating varieties that grow to unnatural sizes. Three factors have caused this to happen：the first is the warmth from oil-pipes; the second is the supply of plentiful food; the third is the absence of fishing round the rigs.(76 words) Divers who work on the North Sea oil rigs have been terrified out of their wits by giant fish bumping into them while they work in deep water. The fish are not sharks or whales, but favourite eating varieties like cod and skate which have grown to unnatural sizes. Three factors have caused this to happen：the warmth from the hot oil-pipes, the plentiful food thrown from the rigs and the absence of fishing around the rigs.(76 words) Key structures：Have：Review (KS 18, 42, 66) Pattern drill 1Have you got one to spare? Have one to spare = have a spare/an extra one. I've only got one. In S 1 and S2, have got = have. This drill may be repeated in the following way, without altering the meaning： S1：I need a pen. Do you have one to spare? S2：I'm sorry. I only have one and I need it myself! 2Would you like bread or toast for tea? Have is used with items of food or drink and means ‘take’ (eat or drink). Note that articles are not used with plural or uncountable nouns when we are talking about the kind (not quantity) of something. 3Have a long walk…. Have is used in the sense of ‘take’ (enjoy, go and…). 4I'll have to have it mended. Causative use of have. Don't worry. I'll get it mended for you. Get can be used in exactly the same way as causative have, though it is more colloquial. Repetition drill Chorus, group or individual repetition To elicit statements involving the use of causative have in a variety of tenses. T：Listen. Do not speak. (1)T：I'm washing my car. S：Are you washing it yourself? I'm having mine washed.(2)T：He'll clean his suit. S：Will he clean it himself? I'll have mine cleaned.(3)T：I must iron my shirt. S：Must you iron it yourself? I must have mine ironed. T：Now you do the same. Ready? 1 As in (1) above. 2 As in (2) above. 3 As in (3) above. 4T：I'm building a garage. S：Are you building it yourself? I'm having mine built.5T：She's decorated her house. S：Has she decorated it herself? I've had mine decorated.6T：I'll install this new television set. S：Will you install it yourself? I'll have mine installed.7T：He must repair his radio. S：Must he repair it himself? I must have mine repaired.8T：He's mended his car. S：Has he mended it himself? I've had mine mended.9T：He's published his book. S：Has he published it himself? I've had mine published. 10T：I've dyed this old jacket. S：Have you dyed it yourself? I've had mine dyed.Key to KS Exercises B1 They have had special cages made to protect the divers from these monsters. 2 The oil companies have had the rigs repaired frequently. 3 The divers often have to work in total darkness. 4 He has had a book published. 5 We have to protect fish stocks. 6 We have not had the letter sent to his new address. 7 ‘I will have the package sent to you, ’ she promised. 8 Do you have to go so soon? 9 Are you going to have this suit cleaned? 10 When will you have this loose handle fixed? 11 I have to take this cap in to have new brakes fitted. 12 How long is it since you had to see a doctor? 13 The doctor told me I had to get more exercise. Key to SD Exercises 1 is 2 is 3 are 4 Is5 have Key to Multiple choice questions 1 b 2 c 3 c 4 c5 a 6 b 7 c 8 b9 a 10 d 11 d 12 dKey to Sentence structure Divers, who often have to work in darkness a hundred feet under water, have been frightened out of their wits by giant fish bumping into them as they work. 91课Key to Summary writing While circling the balloon, the pilot saw three men in the basket, one of whom was holding a pair of binoculars. When it flew over the station, one of the men took photographs. Then it landed near an airfield, but the police could not arrest anyone because the basket contained two Members of Parliament and the Commanding Officer of the station. Afterwards the Commanding Officer explained that one half of the station did not know what the other half was doing. (81 words) The pilot circled the balloon, under which there was a basket containing three men, one of whom was holding a pair of binoculars. Before landing near an airfield, it flew over the station and someone took photographs. As two of the men were Members of Parliament and the other was the Commanding Officer, the police could not arrest anyone. The mystery was explained when the Commanding Officer admitted (said) that one half of the station did not know what the other half was doing. (83 words) Key structures：Can, Be able to, Manage to：Review (KS 19, 43, 67) Pattern drill1Where shall I put these towels? Asking for instructions. The question could also be：Where can I put these towels? You can put them in the cupboard. i. e. There's room in the cupboard, so you will be able to put them there. 2Can you go to see Mary soon? Can you here has the sense of：‘Are you free to…?’ I may be able to go and see her tomorrow. May + be able to indicates possibility in the future. Compare： I can go… tomorrow = I am (shall be) definitely free to go… tomorrow. 3Why didn't you jump over it ? -1 couldn't jump over it. Couldn't expresses inability in the past. It is interchangeable with wasn't able to, but couldn't is preferred. 4Yes, but 1 managed to open it in the end. Managed to (open it) = succeeded in (opening it). Note that was able to (open it) is possible here, but NOT could (open it). In the end = finally, after a great effort. Repetition Drill Chorus, group or individual repetition To elicit statements contrasting the use of could have = (possibility in the past) and was able to (=past success in doing something). T：Listen. Do not speak. (1)T：She didn't swim across the river. S：No, but she could have if she'd wanted to. T：I don't believe it. S：Well, she was able to swim across the river last week. (2)T：You didn't climb the mountain. S：No, but I could have if I'd wanted to. T：I don't believe it. S：Well, I was able to climb the mountain last week.(3)T：He didn't land on that airfield. S：No, but he could have if he'd wanted to. T：I don't believe it. S：Well, he was able to land on that airfield last week. T：Now you do the same. Ready? 1 As in(1) above. 2 As in(2) above. 3 As in(3) above. 4T：You didn't catch any fish. S：No, but I could have if I'd wanted to. T：I don't believe it. S：Well, I was able to catch some fish last week. 5T：They didn't win. S：No, but they could have if they'd wanted to. T：I don't believe it. S：Well, they were able to win last week. 6T：He didn't escape from the camp. S：No, but he could have if he'd wanted to. T：I don't believe it. S：Well, he was able to escape from the camp last week. 7T：You didn't stop smoking. S：No, but I could have if I'd wanted to. T：I don't believe it. S：Well, I was able to stop smoking last week. 8T：She didn't persuade him. S：No, but she could have if she'd wanted to. T：I don't believe it. S：Well, she was able to persuade him last week. Key to KS Exercises Awas able to explain (1. 3), can be a great danger (1. 5), managed to circle (1. 7), could make out (1. 8), could not arrest (1. 11). C1 Can/Could 2 could/was (soon) able to3 were able to 4 can Key to SD Exercises 1 out 2 out 3 for 4 up5 up forKey to Multiple choice questions 1 d 2 b 3 c 4 b5 c 6 d 7 b 8 b9 c 10 b 11 c 12 bKey to Sentence structure A pilot noticed a balloon which seemed to be making for a Royal Air Force Station nearby. He informed the station at once, but no one there was able to explain the mystery.