一般过去时、现在完成时、过去完成时复习

1 一般过去时、现在完成时、过去完成时复习 一． 比较过去时与现在完成时 1）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。 2）过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。 一般过去时的时间状语: yesterday, last week，… ago, in1980, in October, just now, 具体的时间状语 共同的时间状语: this morning, tonight,this April, now, once，before, already, recently，lately 现在完成时的时间状语 for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always, 不确定的时间状语 3）现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如 live, teach, learn, work, study, know. 过去时常用的非持续性动词有 come, go, leave, start, die, finish, become, get married等。 举例： I saw this film yesterday. （强调看的动作发生过了。） I have seen this film. （强调对现在的影响，电影的内容已经知道了。） Why did you get up so early? （强调起床的动作已发生过了。） Who hasn't handed in his paper? （强调有卷子，可能为不公平竞争。） She has returned from Paris. 她已从巴黎回来了。 She returned yesterday. 她是昨天回来了。 He has been in the League for three years. (在团内的状态可延续) He has been a League member for three years. (是团员的状态可持续) He joined the League three years ago. ( 三年前入团，joined 为短暂行为。) I have finished my homework now. 2 一般过去时和现在完成时练习题 1. A. 用 already 或 yet 1) Have they taken down the old pictures ___ ___? No, they haven’t____ ___. 2) Most of us have finished our compositions _____ . 3) He said he hadn’t visited the exhibition _____ ___. B.用 since 或 for 1) We have learned five lessons __ __ _ the beginning of this term. 2) Mrs Liao has been in hospital __ _ ___last week. 3) I have stayed at my ...