第5课练习及答案.doc

LESSON FIVE 练 习 一、将下来句子译成中文，注意句子中时态的使用，并对每组句子加以比较。 1. We have been cleaning the classroom. We have cleaned the classroom. Who has been eating my apple? 2. Who has eaten my apple? Have you had lunch? 3. When did you have lunch? Who's been here while I was out? 4. Who was here while I was out? How has he done it? 5. How did he do it? We have lived in London for eight years. 6. We lived in London for eight years. You are lying.7. You have been lying. He came here after he finished school.8. He came here after he had finished school. Tomorrow is Friday. 9. Tomorrow will be Friday. 二、将下列句子译成中文。注意动词时态的用法并说明原因。 1. I have been telling you hundreds of times to be more attentive. 2. They had been climbing for two hours when they at last reached the summit of the mountain. 3. It is two o'clock now, and I have been working already for three hours, at five o'clock I shall have been working for six hours. 4. He said that by the end of that year he would have been working in the factory for twenty years. 5. Hijacks are dangerous because they are using the most valuable assets (财产) in our democracies (民主国家), human life, to pressure (压力) government to concede (让步) to their demands. 1 6. The revolution of larger and much quieter aircraft is beginning to reduce noise levels under the flight paths. 7. Has it ever happened to you? Have you ever put your trousers (裤子) in the washing machine and then remembered there was a large bank note in your back pocket? When you rescued (抢救) your trousers, did you find the note was whiter than white? 8. If the “fasten seat belts” flash on in flight, obey them quickly; the aircraft may be about to enter turbulence (颠簸气流) and passengers who are walking about, especially at the back, could be thrown around. 9. Pumas are large, cat-like animals that are found in America. When reports came into London Zoo that a wild puma had been spotted (看见) forty-five miles south of London, no one believed