英语现在完成时
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
英语现在完成时
一.基本结构
have(has) + been + done(动词的现在分词)
否定句式have(has) + not + been + done(动词的现在分词) 疑问句式have(has)放在句首
用法
过去发生的动作对现在有影响
I have seen the film ,so I know what the story says.
过去发生的动作持续到现在(还有可能继续发生)
The film has been on for 5 minutes.
延续性动词
现在完成时中应使用延续性动词
非延续性动词:动作开始既(即)结束
非延续性动词过渡到延续性动词
常见:
四.标志
already ,yet, never ,ever ,just ,before ,once/twice/数字+times already, yet
already:用于肯定句,疑问句中,表示“已经”或表示强调He has already left here.
Has he already left here.
yet:用于否定句中,疑问句中,表示“还没”或“已经”My teacher hasn’t had breakfast yet.
Have you written to your parents yet
never ,ever
never:从来没有
ever:曾经
We have never been to the Great wall .
Have you ever been to Canada
just刚才
I am just had breakfast.
all the time总是, during the last years在过去的几年里recently最近地=lately, by the end of (this month ,next year) in the past few years/month 在过去的……间
up to now直到现在
for+段时间,since+点时间
I have been here for 5 years.
I have been here since 2000.
I have been here since 5 years ago. since+段时间+ago
I have been here since I graduated in 2000.since+从句
have/has gone to 去了没回来
have/has been to 去了回来了
have/has been in 在某地待多久
for+段时间,since+点时间用how long 提问
固定句型
Since句型。“since+一般过去时”
Since从句中用非延续性动词或终止性动词表示肯定
Since从句中用延续性动词表示否定
It has only been four days since you went to Tokyo ,but it seems like it’s been four years.
It has/is been 5 years since he began to smoke.
it + was/is +(one of )the most/best +形容词最高级+n.(pl.)+that +完成时
This is the most interesting book that I have ever read.
it + was/is +the first/second/其他序数词/last +time +that +现在完成时/过去完成时
This is the first time children have taken part in General Assembly activities in such size and number.