【正文】
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) + 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. + 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? ’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)。 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。 I don’t know 之類,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。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 ?。骸 ay 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 ?。呵閼B(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+Ving 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) can只能用于否定句和疑問(wèn)句 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) 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) ?! ∑撸簎sed to與would用法對(duì)比表 used to would 、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)?! ould表示過(guò)去時(shí)間的“意志”“意愿” Shylock would not take the money