寧波小升初英語(yǔ)情態(tài)動(dòng)詞用法及詳細(xì)解析(3)
來(lái)源:寧波奧數(shù)網(wǎng)整理 2012-05-11 09:23:16
七:used to與would用法對(duì)比表
used to would
1.表示過(guò)去的動(dòng)作、狀態(tài),重在與現(xiàn)在情況的對(duì)比,不一定要有時(shí)間狀語(yǔ)。
I used to play cards a lot, but now I seldom play.
My hometown is not what it used to be. 1.只表示過(guò)去動(dòng)作的重復(fù),有明確的時(shí)間狀語(yǔ)
I would go to see my grandfather on Sunday when he was in the middle school.
2.would 后只接表動(dòng)作的動(dòng)詞,不接表認(rèn)識(shí)或狀態(tài)動(dòng)詞
He used to be nervous in the exam.
2.表示過(guò)去的習(xí)慣有時(shí)可互換:
When we were very young, we used to / would go skating every winter.
2. 表示過(guò)去的次數(shù)時(shí),不能使用:
( √)We went to the Great Wall five times when we were young.
( X ) We used to go / would go to the Great Wall five times when we were young.
注:used to do的否定式:usedn’t to do 或didn’t use to do (usedn’t也可寫(xiě)作usen’t)
疑問(wèn)式: Did you use to do ? Didn’t you use to do?
Used you to do? Usedn’t you to do?
情態(tài)動(dòng)詞表推測(cè)
情態(tài)動(dòng)詞表推測(cè)的意義:
1、大多數(shù)情態(tài)動(dòng)詞(除表‘能力、許可、意志’外),都可以表示推測(cè),其程度有差異。按其可能性程度的高低排列為:
Must ﹥will ﹥would ﹥ought to ﹥ should ﹥ can ﹥ could﹥ may ﹥ might
肯定 完全可能 很可能 可能 有可能
2.注意區(qū)分情態(tài)動(dòng)詞的否定的含義:
may not或許不、可能不 might not可能不 can’t 不可能
mustn’t不許、禁止 shouldn’t不應(yīng)該 needn’t 不必
3.情態(tài)動(dòng)詞表推測(cè)具體運(yùn)用:情態(tài)動(dòng)詞可以對(duì)現(xiàn)在、進(jìn)行、過(guò)去推測(cè)
S主+情態(tài)動(dòng)詞+be+adj 對(duì)“性質(zhì)”“特征”的推測(cè)
S主+情態(tài)動(dòng)詞+be+n 對(duì)“職業(yè)”“事物”的推測(cè)
S主+情態(tài)動(dòng)詞+V原 對(duì)經(jīng)常性行為的推測(cè)
S主+情態(tài)動(dòng)詞+be+V-ing 對(duì)進(jìn)行著的行為的推測(cè)
S主+情態(tài)動(dòng)詞+have+PP 對(duì)過(guò)去的行為的推測(cè)
特別提醒:情態(tài)動(dòng)詞表推測(cè)時(shí)
1、 can只能用于否定句和疑問(wèn)句
2、 must只能用于肯定句(它的否定句和疑問(wèn)句其實(shí)就用can來(lái)代替了)
3、 如句中有情態(tài)動(dòng)詞 + 完成時(shí),定是對(duì)過(guò)去的推測(cè) 。
4、 句中如有表示不肯定的話語(yǔ),如:I am not sure; I don’t know 之類(lèi),常選may /might的各種形式
4. 記住下面幾組表示反勸的特殊的表推測(cè)的形式
1). could + have + PP表示本來(lái)能做到,但事實(shí)上沒(méi)有做到。 He could have finished the task on time, but the heavy snow came.
2). couldn’t +have + PP表示本來(lái)不能做到,但已經(jīng)做到了。 She could not have covered the whole distance, but in fact she arrived ahead of time.
3) needn’t + have + pp表示本不必做的,但已經(jīng)做到了。 She needn’t have attended the meeting yesterday, but she did.
4.) should/ought to +have + PP表示 該做而沒(méi)有做 The plant is dead. I should/ought to have given ot more water.
5) shouldn’t/ oughtn’t to +have + PP表示 不該做而做了。 You oughtn’t to / shouldn’t have taken her bike without permission.
5. 記住下面對(duì)比:
must只能用于肯定句(它的否定句和疑問(wèn)句其實(shí)就用can來(lái)代替了)
1.must + have + PP 表示對(duì)過(guò)去肯定的推測(cè),譯為“一定是,準(zhǔn)是” The road is wet. It must have rained yesterday.
2.can + have + PP 表示對(duì)過(guò)去的推測(cè)(限于問(wèn)句中) Can she have said so? 他可能這樣說(shuō)嗎?
3.can’t + have + PP 表示對(duì)過(guò)去的否定推測(cè) He cannot have said such a foolish thing.
情態(tài)動(dòng)詞表推測(cè)的反意疑問(wèn)句
情態(tài)動(dòng)詞表推測(cè)的反意疑問(wèn)句,簡(jiǎn)單來(lái)說(shuō),就是以情態(tài)動(dòng)詞后的時(shí)態(tài)為淮,如句子里有明確的時(shí)間狀語(yǔ),則以其為準(zhǔn)。以 must 為例:
eg. 1. You must be hungry now, aren’t you?
2. He must be watching TV , isn’t he ?
3 Tom must have lived her for a long time, hasn’t he ?
4. She must have arrived yesterday, didn’t she?
注:如選擇題中(以She must have arrived yesterday, didn’t she?為例)既有didn’t she又有hasn’t she則以didn’t she?為最佳答案。
以上就是小升初英語(yǔ)情態(tài)動(dòng)詞的對(duì)比解析及用法,希望對(duì)大家有所幫助。最后祝大家在寧波小升初中能夠取得一個(gè)優(yōu)異的成績(jī),進(jìn)入理想中的學(xué)校。
編輯推薦:
寧波小升初英語(yǔ)書(shū)面表達(dá)優(yōu)秀范文
相關(guān)文章
- 小學(xué)1-6年級(jí)作文素材大全
- 全國(guó)小學(xué)升初中語(yǔ)數(shù)英三科試題匯總
- 小學(xué)1-6年級(jí)數(shù)學(xué)天天練
- 小學(xué)1-6年級(jí)奧數(shù)類(lèi)型例題講解整理匯總
- 小學(xué)1-6年級(jí)奧數(shù)練習(xí)題整理匯總
- 小學(xué)1-6年級(jí)奧數(shù)知識(shí)點(diǎn)匯總
- 小學(xué)1-6年級(jí)語(yǔ)數(shù)英教案匯總
- 小學(xué)語(yǔ)數(shù)英試題資料大全
- 小學(xué)1-6年級(jí)語(yǔ)數(shù)英期末試題整理匯總
- 小學(xué)1-6年級(jí)語(yǔ)數(shù)英期中試題整理匯總
- 小學(xué)1-6年語(yǔ)數(shù)英單元試題整理匯總




