英语动词时态:现在完成时

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英语动词时态:现在完成时
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英语动词时态:现在完成时
英语动词时态:现在完成时

英语动词时态:现在完成时
现在完成时是英语时态中最不好掌握的时态,因为对我们来说,它很难在汉语中找到相对应的说法,下面笔者从几个方面分析一下现在完成时的用法.
1. 现在完成时的定义:
2. 强调过去的动作和状态对现在产生的影响和结果.
常用的时间状语有:already,yet,never,有时没有时间状语;多是一般疑问句.
I have already seen the film.
Have you decided yet?
3. 刚刚和最近发生的动作和状态.
常用的时间状语有:just,lately,recently,in the past few days/weeks
注意:just 和just now用不同的时态,just now(刚才)一般用过去时.
I have just phoned him?
I have visited my parents recently.
4. 从过去一直延续到现在的动作和状态.
常用的时间状语有:since,(可用作介词和连词)for
注意:主句的谓语动词一般是延续性的动词,如果是否定形式,主句的谓语动词可用瞬间动词,否则,不能用瞬间动词.
I have lived here for 20 years.
I have lived here since I came to this city
I have learned English since 10 years ago.
He hasn't come to visit us for a few months.
5. 从过去到现在一段时间的动作和状态.
常用的时间状语有:up till now,so far,in this morning,in this week,in this year,in my life
注意:这两句话的区别
I have seen him this morning.(时间还在上午)
I saw him this morning.(时间不是在上午了)
We have learned so many things from you so far.
I have seen any bird like this in my life.
6. 对过去的体验和经历.
常用的时间状语有:before,ever,once,twice,many times
注意:这两句话的区别
I have been to Beijing (去过北京)
I have gone to Beijing(去北京了,人还没回来〕