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2018年普通專升本英語語法:used to / be used to

發(fā)布時(shí)間:2018/02/02 15:39:03 來源:易學(xué)仕專升本網(wǎng) 閱讀量:5030

摘要:1.used to可看作一個(gè)半助動(dòng)詞或情態(tài)動(dòng)詞,其后跟動(dòng)詞原形,表示過去的習(xí)慣或經(jīng)常發(fā)生的動(dòng)作,例如: When he was a child, he used to ask lots of questions. I want to kn

1.used to可看作一個(gè)半助動(dòng)詞或情態(tài)動(dòng)詞,其后跟動(dòng)詞原形,表示過去的習(xí)慣或經(jīng)常發(fā)生的動(dòng)作,例如:

When he was a child, he used to ask lots of questions.

I want to know the places (that/which) he used to go to.

否定式為:used not to(書面語), use(d)n’t to(口語), didn’t use to(口語)

疑問式為:Used sb to …?(書面語), Did sb use to …?(口語)

反意疑問句式為:use(d)n’t sb? (書面語) didn’t sb? (口語)

2.be used to = get used to 都是一個(gè)固定的結(jié)構(gòu),意思為:習(xí)慣于某事或做某事的意思,to為介詞,后接名詞或動(dòng)名詞,不能跟動(dòng)詞原形,例如:

We are used to the weather in the south of China.

They have got used to getting up early in the morning.

be used to的各種形式變化如下:

疑問式為:Be(具體形式) sb ….? 否定式為:sb be(具體形式) not …

反意疑問式為:be(具體形式) not sb? (be作為系動(dòng)詞看待)

get used to的各種形式變化如下:

疑問式為:Do/Does/Did sb get …? 否定式為:sb does/do/did not get …

反意疑問式為:do/does/did not sb? (get作為行為動(dòng)詞看待)

3.be used to + Verb或as/for接名詞,表示某東西被用來作某事或當(dāng)什么東西來使用,是一個(gè)被動(dòng)語態(tài)的結(jié)構(gòu),例如:

This knife is usually used to cut fruit.

This magazine was used as a fan last night because of the hot weather.

Blooms are used for cleaning the floor when we do general cleaning.

由于be為助動(dòng)詞,因此它的疑問式、否定式及反意疑問式則按一般規(guī)則進(jìn)行變化。

注意used to與would的區(qū)別:

(1).used to重在表示與現(xiàn)在的對(duì)比,含“過去曾經(jīng)/一度,現(xiàn)在未必”之意;would重在敘述過去的情況,沒有上述含義。如可以說:

He used to get up early, but not now. 但不說:He would get up early, but …

(2).used to可以表示過去習(xí)慣或經(jīng)常的狀態(tài);would不能,它只能表示過去的一個(gè)經(jīng)常重復(fù)的動(dòng)作,如可以說:

There used to be a temple nearby. 但不能說:There would be …

(3).used to較正規(guī)、普通,多用于口語;would不太正規(guī)、多用于書面語。

(4).兩者都不能用于表示某事發(fā)生的具體次數(shù)。但would可表示過去有時(shí)或偶爾發(fā)生的動(dòng)作,因而可與sometimes, now and then, from time to time等時(shí)間狀語連用,例如:

He would sit there for hours sometimes, doing nothing at all.

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