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语法专项1:一般现在时、一般过去 时和现在完成时辨析 ( 一般现在时 ) Time 一般现在时的“三性”:反复性、永恒性、真实性 1. 表示习惯性、经常性动作 He often helps others. 频率副词: often, always, usually, sometimes, seldom, never, twice a week, occasionally, every now and then 2. 客观事实、真理、名言 The teacher told us that the water boils at 100C. 3. 表示目前的状态、能力、性格、特征等 He used to get up early, but he doesn’t now. 4. 按照时间表发生的事情 The train arrives at Beijing Railway Station at 9:00. 5. 时间、条件和让步状语从句中用一般现在时表将来 When I grow up, I will be a teacher. 6. 以 here, there开头的倒装结构中,通常用 go ,come 的一 般现在时替代进行时 Here comes the bus! 【例1】 On Monday mornings it usually _ me an hour to drive to work although the actual distance is only 20 miles. A. takes B. is taking C. took D. will take 1 学科网(北京)股份有限公司 学科网(北京)股份有限公司 学科网(北京)股份有限公司 学科网(北京)股份有限公司 学科网(北京)股份有限公司 学科网(北京)股份有限公司 【例2】 You'd better write down her phone number before you _ it. 一般过去时: Past Now Time 现在完成时: Past Now Time A. forget C. forgot B. are forgetting D. will forget ( 区别一:时间标志 词 ) 一般过去时:(时间点) yesterday, two days ago, in 1949; when, what time,… 现在完成时: (时间段) recently, lately, since then, up to now, so far, in the last/ past few days… 不要过于依赖时间标志词,出题人会故意戳你软肋。 ( 区别二:是否与现在有 关 ) I had my breakfast. I have had my breakfast, so I’m not hungry now. I lost my key. I have lost my key, so I can’t enter the room now. Did you go to Canada last year?(去年发生的行为) Have you been to Canada?(是否去过,对那儿了解多少) 2 区别二: did (无因果) have done (有因果) 一般过去时:强调动作发生在过去,与现在无关 现在完成时:强调过去动作对现在的影响。 【例3】 He _ football regularly for many years when he was young. A. was playing B. played C. has played D. had played 【例4】 — I didn’t ask for the name list. Why _ on my desk? —I put it there just now in case you need it. A. does it land B. has it landed C. did it land D. had it landed 一般过去时和现在完成时辨析: 一般过去时 现在完成时 与现在的关系 与现在无关系 往往与现在有 前因后果的关系 动作对时间的 要求 发生在过去的 某个具体时间 过去即可, 时间不具体 语境中用现在完成时,默认说话者已将关注的重心转移 到事件对现在的影响上。 3 ( 特 殊句式: ) 1. want, think, wonder, hope, intend等表意愿的动词用 一般过去时表示“过去想要/认为/想知道/希望/打算”, 暗示“现在已不这样了”。 练一练: — I’ve got to go now. — Must you? I _ you coul