小男孩‘自慰网亚洲一区二区,亚洲一级在线播放毛片,亚洲中文字幕av每天更新,黄aⅴ永久免费无码,91成人午夜在线精品,色网站免费在线观看,亚洲欧洲wwwww在线观看

分享

現(xiàn)在完成進(jìn)行時(shí)

 hard飄零 2015-07-20

知識(shí)點(diǎn)總結(jié)

1. 現(xiàn)在完成進(jìn)行時(shí)的定義

現(xiàn)在完成進(jìn)行時(shí)表示某動(dòng)作從過(guò)去某個(gè)時(shí)間開(kāi)始,一直延續(xù)到現(xiàn)在,并且還有可能持續(xù)下去。如:

We have been waiting for him for two hours.

2. 現(xiàn)在完成進(jìn)行時(shí)的結(jié)構(gòu)

have /has been + doing

3. 現(xiàn)在完成進(jìn)行時(shí)的應(yīng)用

現(xiàn)在完成進(jìn)行時(shí)所用的時(shí)間狀語(yǔ):

this month / week / year, these days, recently / lately,

in the past few + 時(shí)間段, since +時(shí)間點(diǎn), for + 時(shí)間段。如:

They have been building the bridge for two months.

They have been planting trees this month.

(一)表示動(dòng)作的延續(xù)

The Chinese have been making paper for two thousand years.

中國(guó)有2000年的造紙歷史。(動(dòng)作還將繼續(xù)下去)

I have been learning English since three years ago.自從三年前以來(lái)我一直在學(xué)英語(yǔ)。

(二)表示在說(shuō)話(huà)時(shí)刻之前剛剛結(jié)束的動(dòng)作。

We  have  been waiting for you for half an hour.

我們已經(jīng)等你半個(gè)鐘頭了。(動(dòng)作不再繼續(xù)下去)

(三)有些現(xiàn)在完成進(jìn)行時(shí)的句子等同于現(xiàn)在完成時(shí)的句子。

They have been living in this city for ten years.

They have lived in this city for ten years.

他們?cè)谶@個(gè)城市已經(jīng)住了10年了。

I have been working here for five years.

I have worked here for five years.

我在這里已經(jīng)工作兩年了。

(四)大多數(shù)現(xiàn)在完成進(jìn)行時(shí)的句子不等同于現(xiàn)在完成時(shí)的句子。

I have been writing a book.(動(dòng)作還將繼續(xù)下去)

我一直在寫(xiě)一本書(shū)。

I have written a book.(動(dòng)作已經(jīng)完成)

我已經(jīng)寫(xiě)了一本書(shū)。

They have been building a bridge.

他們一直在造一座橋。

They have built a bridge.

他們?cè)炝艘蛔鶚颉?/span>

(五)表示狀態(tài)的動(dòng)詞不能用于現(xiàn)在完成進(jìn)行時(shí)。

I have known him for years.

我認(rèn)識(shí)他已經(jīng)好幾年了。

×I have been knowing...

這類(lèi)不能用于現(xiàn)在完成進(jìn)行時(shí)的動(dòng)詞還有:love愛(ài),like喜歡,hate討厭,等。

4. 現(xiàn)在完成進(jìn)行時(shí)與現(xiàn)在完成時(shí)的區(qū)別

 (1) 現(xiàn)在完成時(shí)強(qiáng)調(diào)動(dòng)作的完成,而現(xiàn)在完成進(jìn)行時(shí)強(qiáng)調(diào)動(dòng)作的延續(xù),因此,表示動(dòng)作的完成,只能用現(xiàn)在完成時(shí),而不能用現(xiàn)在完成進(jìn)行時(shí)。如:

He has changed his idea.

(2) 在表示動(dòng)作的延續(xù)時(shí),雖然既可用現(xiàn)在完成時(shí),也可用現(xiàn)在完成進(jìn)行時(shí),但現(xiàn)在完成進(jìn)行時(shí)強(qiáng)調(diào)動(dòng)作的進(jìn)行。因此在需要明確表示動(dòng)作還要持續(xù)下去時(shí),應(yīng)用現(xiàn)在完成進(jìn)行時(shí)。如:

We have been studying here for two years.

 (3) 有些延續(xù)性動(dòng)詞(如 keep, learn, live, stay, study, work等),用于現(xiàn)在完成時(shí)或現(xiàn)在完成進(jìn)行時(shí)的區(qū)別不大。如:

I have lived here for many years.

=I have been living here for many years.

我在這兒住了多年了。

常見(jiàn)考法

1.現(xiàn)在完成進(jìn)行時(shí)的基本用法;2.現(xiàn)在完成進(jìn)行時(shí)和現(xiàn)在完成時(shí)的區(qū)別;3.現(xiàn)在完成進(jìn)行時(shí)和其他時(shí)態(tài)的搭配

誤區(qū)提醒

1.現(xiàn)在完成進(jìn)行時(shí)的構(gòu)成記憶不清;2.不能準(zhǔn)確區(qū)分現(xiàn)在完成進(jìn)行和現(xiàn)在完成時(shí)的區(qū)別;3.時(shí)態(tài)搭配上出現(xiàn)錯(cuò)誤

【典型例題】

1. Cathy is taking notes of the grammatical rules in class at Sunshine School, where she ______ English for a year.

A.studies  B.studied  C.is studying D.has been studying

解析:錯(cuò)選B。到現(xiàn)在為止,Cathy 仍然在Sunshine School學(xué)習(xí),因此不能選B。根據(jù)題意,應(yīng)該選D。表示動(dòng)作從過(guò)去某時(shí)開(kāi)始,一直延續(xù)到現(xiàn)在,還可能繼續(xù)延續(xù)下去。

2.. Now that she is out of job, Lucy ___ going back to school,but she hasn’t decided yet.

A. had considered B. has been considering  

C. considered  D. is going to consider

解析:錯(cuò)選D。受漢語(yǔ)影響,認(rèn)為L(zhǎng)ucy將要考慮回到學(xué)校。本題后面表示“她還未決定”,表示現(xiàn)在仍在考慮,所以正確答案B。

3.--- Did you find the missing couple in the mountain yesterday?

 --- No, but we ____ to get in touch with them ever since.

A. have tried B. have been trying C. had tried D. had been trying

解析:錯(cuò)選A?!皬哪菚r(shí)一直到現(xiàn)在,我們一直在努力和他們聯(lián)系?!盇選項(xiàng)表示聯(lián)系過(guò),隱含已經(jīng)放棄,所以錯(cuò)誤。正確答案為D。


    本站是提供個(gè)人知識(shí)管理的網(wǎng)絡(luò)存儲(chǔ)空間,所有內(nèi)容均由用戶(hù)發(fā)布,不代表本站觀點(diǎn)。請(qǐng)注意甄別內(nèi)容中的聯(lián)系方式、誘導(dǎo)購(gòu)買(mǎi)等信息,謹(jǐn)防詐騙。如發(fā)現(xiàn)有害或侵權(quán)內(nèi)容,請(qǐng)點(diǎn)擊一鍵舉報(bào)。
    轉(zhuǎn)藏 分享 獻(xiàn)花(0

    0條評(píng)論

    發(fā)表

    請(qǐng)遵守用戶(hù) 評(píng)論公約

    類(lèi)似文章 更多