英语的“时态”来一波 现在完成进行时(不同场景的用法)
一、现在完成进行时的基本概念
①现在完成进行时是英语中动词的一种基本时态
②构成为:主语+助动词(have/has)+动词的过去分词+其他成分。
③表达意义:
a.表示从过去某时开始一直持续到现在的动作,并且还将持续下去。
b.表示在说话时刻之前到现在正在进行的动作。
二、典型句子
->句子1:The Chinese have been making paper for two thousand years.中国有2000年的造纸历史。(动作还将继续下去)
->句子2:Since the dawn of human history, human beings have been asking questions like“What is essence of life. ”
->[自从人类历史之初,人类一直在问诸如“什么是生命的本质”这样的问题。 ](2009年真题)
->句子3:In fact, the 70-year-old may have been disorganizing things for decades.
->[其实,这位70岁的老人可能已经思维混乱几十年了。] (2007年真题)
->句子4:Many businesses like automakers have been aggressively discounting their products.
->[汽车制造商等很多企业一直在积极给产品打折。](2006年真题)
->句子5:In recent years, railroads have been combining with each other, merging into super systems, causing heightened concerns about monopoly.
->[近年来,铁路一直彼此合并,成为超级系统,引起人们更加担忧垄断。](2003年真题)
->句子6:Take Colleen for example, who had been saving secretly for a few years before she confessed to herpartner.
->[就以Colleen为->句子,她在向丈夫交代前一直秘密地存钱,存了好几年。](2008年真题)
->句子7:The three children have been sponging on their grandparents for over ten years.
->[10多年来这3个孩子一直靠他们的姥爷、姥姥养活。]
->句子8:I have been waiting for you for two hours.
->[我已经等你两个小时了。]
英语的“时态”来一波,过去完成时,不同场景的用法
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