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中考网整理了关于2019年中考必考的英语八大时态介绍之现在完成时，希望对考生们有所帮助，仅供参考。 标志：have / has + 动词的过去分词 1. 表示一个过去发生并已完成的动作对现在产生影响或结果，强调的是现在的状况（表示“已完成”）。如： He has left the city. （结果：他目前不在这个城市） Someone has broken the window. （结果：窗户破了） 2. 表示一个动作开始于过去，持续到现在，也可能还会继续持续下去（表示“未完成”）。 I have been busy since last week. He has taught in our school for 30 years. I’ve finished half so far. 注意 瞬间动词通常是不能用现在完成时表持续性的，但其否定结构则可以。如： She hasn’t seen you for ages. His father hasn’t touched beer for a whole week. 3. 表示过去到现在为止反复发生的动作或多次出现的状态，常与表示频度的副词always, often, every day等连用。如： I have often heard that he is the cleverest person in that company. 4. 在时间和条件状语从句中，现在完成时表示将来某时完成的动作。如： I’ll go to your home when I have finished my homework. If it has stopped snowing in the morning, we’ll go the park. 5. 与现在完成时连用的常见词语 能与现在完成时连用的词语很多，just, already, yet, before, never, ever, recently等，但常见的有： 1) since 自从 I have been there many times since the war. We haven’t seen each other since last week. We have been friends ever since. 2) in / for / during the past/last … years 在过去/最近…中 I’ve been ill for the past three weeks. Great changes have take place in the last ten years. I have been here (for) the last/past month. 3) so far 到目前为止 We haven’t had any trouble so far. So far the search for the missing middle-aged woman has been fruitless. 4) up to/until now 到现在为止 Up to now he’s been quiet. Up to now, the work has been easy. I have heard nothing from him up till now. Up till now we have planted over 2000 trees. 5) It is/will be the first/second … time that … 这是第一/二…次… It’s the first time (that) I’ve been here. It will be the first time (that) I’ve spoken in public. It is the second time (that) I have met him today. 6) This is + 形容词最高级 + that … 这是最… This is the best film that I’ve (ever) seen. (责任编辑：admin) |