江西成考高起点英语时态复习资料二

来源:
江西成考网
发布日期
2017年04月19日

摘要:  IV 现在完成时   一、现在完成时的构成式是have(has)+动词的ED分词。   1)Research [A]in molecular(分子的)biology has demonstrate [B]phenomenal similarities [C]between [D]humans and apes(类人猿)。   2)Gore Vidal has steadily pursue [A] a literary career [B]remarkable [C]for its prod

  IV 现在完成时

  一、现在完成时的构成式是have(has)+动词的ED分词。

  1)Research [A]in molecular(分子的)biology has demonstrate [B]phenomenal similarities [C]between [D]humans and apes(类人猿)。

  2)Gore Vidal has steadily pursue [A] a literary career [B]remarkable [C]for its productivity,versatility(多样性) and unpredictability [D] (多变性)。

  3)For centuries large communities of people have living [A]on houseboats in parts [B]of the world where [C]the climate is warm and the waters are calm [D]。

  二、现在完成时表示到现在为止的一段时间内发生的情况或动作,强调的是对现在的影响,可能是已完成的动作,也可表示多次动作的总和,或习惯性的行为和持续的动作。

  4)Ninety eight percent of all animal species [A]in [B]history had [C]died out [D].

  5)The domestic [A]dog,considered to be the first tamed animal,is coexisting [B]with human beings since [C]the days of the cave dwellers [D](居住者)。

  三、如果句中有表示到现在为止这段时间的状语时,用现在完成时,这些时间状语有now,today, this week,this month,this year,现在完成时不和表示具体的时间状语连用,如yesterday,last year等,但可以和always,before, just,in/during the past(few weeks,years,fifty years)连用,这时in表示"过去多少时间",不能用aft