初中现在完成时讲解及巩固练习.pptVIP

present(now);现在完成时;过去分词的构成;二:用法:

1)现在完成时表示过去发生的动作,对现在造成的影响或结果。这个影响或结果对现在必须还存在

Someonehasbrokenthewindow.(窗户现在是坏的)

Ihavealreadylostthekey.(我现在没有钥匙)

Ihaven’treadthatbookyet.(不了解书的内容)

Ihavejustcleanedmyhands.(手是干净的);Translatethefollowingsentences.;现在完成时;（for+表示一段时间的词组，since+表示过去某一时刻的词或词组）谓语只可用延续性动词.for在否定句里可以和短暂性动词连用;现在完成时;2表示从过去已经开始，持续到现在的动作还有可能继续持续下去。;ever(曾经)HaveyoueverbeentoBeijing?

never(从不)Ihaveneverseenhim.

before(以前)Haveyouseenthefilmbefore?

since(自从…以来)I’veworkedintheschoolsince1999.

for(长达)He’slivedinShenzhenfor6years.;inthepastseveraldays/weeks/years(在过去的…)

recently(最近)Ihavenotwrittentomyparentsrecently.

sofar(到目前为止)Sofarshehaslearned5Englishsongs.

uptonow(到目前为止)once,twice,manytimes(次数）

thismorning/month/year(今天早上/这个月/今年)

;I’vealreadyhaddinner.

I________________dinner________.

2.Hehasjustfinishedhishomework.

He________________hishomework_________.

3.Mum’scookedthedinner.

Mum_______________thedinner.

4.Susan’slearnedEnglishatschool.

Susan________________Englishatschool.;I’vealreadyhaddinner.

2.Hehasjustfinishedhishomework.

3.Mum’scookedthedinner.

.

4.Susan’slearnedEnglishatschool.

;分清与一般过去时的用法

现在完成时属于现在时态的范围，不能和表示过去的时间状语连用，如yesterday,lastnight,threeweeksago,in1990等.而一般过去时只表示过去的动作或状态，和现在不发生关系。

eg---Ihaveseenthefilm.

eg---Isawthefilmlastweek.

eg---Hehaslivedheresince1993.

eg----Helivedherein1993.;动词填空：

1._____you________(clean)theroom?

Yes,we__________(do)thatalready.

When_______you______(do)it?

We_______(do)itanhourago.

2.______he______(see)thisfilmyet?Yes.

When_____he_____(see)it?

He______itlastweek.

3.Howmanytimes_____you______(come)here?Once.

;4.I_______(read)thenoveltwice.It’sinteresting.

5.She_______(go)toPairs,hasn’tshe?Yes.

How______she____