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7 The father as well as his three children ____skating on the frozen river every Sunday afternoon in winter. A. is going B. go C. goes D. are going 解析：正确答案C。描述现在习惯性动作使用一般现在时;此题还涉及主谓一致。 一般现在时表不受时限的客观存在、现在习惯性动作及现在状态或瞬间动作。 8 Father _____for London on business upon my arrival, so I didn’t see him. A. has left B. left C. was leaving D. had left 解析：正确答案D。 难点1.leave for... 意为：出差到... 难点2. upon my arrival相当于when I arrived，是句子的状语 “父亲去伦敦出差”这一动作在“我到达”之前已经发生，故“我没见着他”。 某个动作或过程在过去的过去已经完成，与现在没有联系;而且过去完成时有一个与一般过去时动作的先后。 9 I won’t tell the student the answer to the math problem until he ____on it for more than an hour. A. has been working B. will have worked C. will have been working D. had worked 解析：正确答案A。在时间状语从句中用一般现在时代替将来时，故排除选项B和C;据时态呼应规律排除选项D;学生一直在做数学练习，直到规定时间完毕教师才公布答案。 某个动作或过程过去已经开始，一直持续到说话时刻，有可能继续延续。因此，现在完成进行时仍带有进行时的持续性;某个动作或过程过去的过去已经开始，一直持续到过去某个时刻，有可能继续延续，用过去完成进行时。 10 Though having lived abroad for years, many Chinese still ______ the traditional customs. A. perform B. possess C. observe D. support 解析：选择C。 perform执行，表演;possess拥有;observe遵守，奉行(习俗等);support支持。 句意为：许多国人尽管在国外生活了多年，依然遵守传统的习俗。 由句意可知应该是遵守习俗，选C。 (责任编辑：admin) |