1) 用于完成时的区别
延续动词表示经验、经历; 瞬间动词表示行为的结 果,不能与表示段的时间状语连用。
He has completed the work. 他已完成了那项工作。
Ive known him since then. 我从那时起就认识他了。
2) 用于till / until从句的差异
延续动词用于肯定句,表示做直到 瞬间动词用于否定句,表示到,才
He didnt come back until ten oclock.
他到10 点才回来。
He slept until ten oclock.
他一直睡到10点。
典型例题
1. You dont need to describe her. I ___ her several times.
A. had met B. have met C. met D. meet
答案B. 首先本题后句强调对现在的影响,我知道她的模样,你不用描述。再次,several times告知为反复发生的动作,因此用现在完成时。
2.---Im sorry to keep you waiting.
---Oh, not at all. I ___ here only a few minutes.
A. have been B. had been C. was D. will be
答案A. 等待的动作由过去开始,持续到现在,应用现在完成时。
新型“地沟油”恶心升级
暖心小说《小王子》第21章
Romney wins Iowa by 8 votes
Shenzhen cops accidentally shoot cabbie
Romney wins New Hampshire
《夏洛特的网》第五章(下)
Tokyo planning to name islets near Diaoyu Islands
Chinese tourists on Italy ship safe
Landslide kills 25 in Philippines
Free library opens door to knowledge
'Cold war thinking' has no place in Asia
Kodak's latest Apple, HTC lawsuits may increase value of patent portfolio
“螺旋藻产品”铅超标
什么是“问题彩民”?
Scalpers dial up trouble for iPhone release
Mayor vows action after killings of Chinese
Syria's Assad refuses to resign
“疑似狼”事件
Bomb kills official at Iran nuke facility
英语单词不用逐个背,252个词根就够了(七)
暖心小说《小王子》第17章
“纸iPhone”成清明祭品
《夏洛特的网》第三章(下)
Teheran claims CIA behind attack
《夏洛特的网》第三章(上)
China faces diplomatic challenges in 2012
Party newspaper People's Daily going public
Sudan troops, rebels clash in S. Kordofan
Sustainable urbanization 可持续城镇化
US 'stoking up tensions' to gain regional role
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