新概念英语第二册87课课后习题详细答案.doc

新概念英语第二册课后习题答案详解Lesson 87 练习答案 Key to written exercises 1．关键句型练习答案 A The man said that he was travelling on the eight oclock train to London at the time the murder was committed. The inspector asked him if he always caught such an early train. The man said that he did because he had to be at work at ten oclock, and that his employer would confirm that he was there on time. The inspector then asked him if a later train would get him to work on time. The man supposed that it would, but said that he never caught a later train. The inspector asked at what time he had arrived at the station. The man said that he had arrived at the station at ten to eight. He added that he had bought a paper and waited for the train. When the inspector asked him if he had noticed anything unusual, the man said he hadnt. The inspector suggested that he was not telling the truth and that he did not catch the eight oclock train, but (caught) the eight twenty-five, which would still get him to work on time. The inspector pointed out that on the morning of the murder, the eight oclock train did not run at all, as it had broken down at Ferngreen station and had been taken off the line. 2．多项选择题答案 1. c根据课文第5行和第14行，可以判断只有c. he arrived at work on time 是极好的不在犯罪现场的理由，其他3个虽然都是课文所涉及到的情况，但都不是充分的不在犯罪现场的证据。所以选c.2. d从课文最后一段可以看出d.与课文内容相符，而其他3个选择都不是课文中提及的内容，所以应该选d.3. c表示“在某个城市”应该用介词in, 因此只能选in 才符合语法，而其他3个选择都不符合语法。4. d前一句He catches an early train (他乘早班火车)是用的一般现在时，表示现在习惯性的或经常的动作，因此只有选d. always does 才能与前一句的含义相吻合。 a. use to 不合乎语法，也不合乎题目意思；b. used to 表示过去经常性的动作，与前一句时态不一致；c. is accustomed to (习惯于)意思不完整。5. a前一句中的not telling the truth 意思为“不讲实话”，本句应该选a. telling (说谎)才合乎习惯用法，并与前一句含义相符。其他3个选择b. saying (说)；c. talking (讲话，交谈)；d. speaking (讲说)中，虽然都有“说”，“讲”的含义，但不用于“说谎”，或“说实话”这类短语中，只有tell 常用于tell the truth, tell a lie 这样的固定短语中，所以应该选a.6. c在钟点前面要用介词at, 所以应该选c. at 才合乎语法，其他3个选择都不能用在钟点前面。7. ca. cant catch (不能赶上) 是现在时，与前半句的动词（broke down）时态不一致。 b. mightnt catch (可能不会赶上) 表示现在或将来的概念，也与前面的时态不一致。 d. mightnt have caught (