摘要:表示过去发生的动作或存在的状态,一直持续到现在,也许还将继续下去,可以和表示从过去某一时刻延续到现在的一段时间的状语连用,即for +时间段,since+时间点/从句, in the last ten years等,谓语只可用延续性动词. 解析: 1.英语动词根据词义可分为两种,一种是延续性的,一种是终止性的,终止性动词(也可称为非延续性动词,瞬间动词,或点动词),如begin,start,die,buy,leave, come等,表示动作的发生与结束于一瞬间完成,不能再延续,所以它的现在完成时不能和表示延续的时间状语连用,即不能与表示一段时间的状语,for+时间段, since+时间点/从句连用,也不能用在how long引导的特殊疑问句中. eg. I've left Shanghai for three days.(×) I've been away from Shanghai for three days.. I left Shanghai three days ago. It is /has been three days since I left Shanghai.

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书面表达。
      假设你是李明,你的澳大利亚朋友Dick得知你校正在推行素质教育,你现在的周末生活与过去相比发生了很大变化。请你根据下表提供的信息,用英语写一封信告诉他发生的变化。
过去 (in the past)
现在 (now)
白天  6点超床、上课 (上午4节,下午4节)
(get up, have four classes)
不必去上学,可以做自己喜欢的事 (举例)
(don't have to go to school, can do what I like to do)
晚上 做家庭作业或复习功课
(do homework, go over the lessons)
可以看电视、上网、读课外书等 (for example,
watch TV, surf the Internet, do some reading.)
就寝 10:30 (got to bed at…) 9:30 (go to bed at…)
注意:1. 词数:约100词; 
          2. 信的开头已写好,不计入总词数。
Dear Dick,
        I am glad to hear from you again. My life at weekends has changed a lot since last year…                       
                                                                                                                                                              
                                                                                                                                                              
                                                                                                                                                              
 
      Best wishes. 
                                                                                                                                  Your friend,
                                                                                                                                   Li Ming   
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