4.If we had phoned the rescue service in time,we ________ on the motorway right now.( 。
A.weren't trappedB.wouldn't be trapped
C.hadn't been trappedD.wouldn't have been trapped

分析 如果我們及時(shí)打電話給救援服務(wù)部門,現(xiàn)在我們就不會(huì)被困在高速公路上了.

解答 答案:B
句意表達(dá)的是虛擬;題干中條件句對(duì)過去進(jìn)行虛擬,主句對(duì)現(xiàn)在進(jìn)行虛擬,是一個(gè)綜合虛擬句;對(duì)現(xiàn)在的虛擬,主句用情態(tài)動(dòng)詞加動(dòng)詞原型.故選B.

點(diǎn)評(píng) 虛擬語氣是表示與事實(shí)相反的假設(shè),構(gòu)成方式有:對(duì)現(xiàn)在或?qū)恚瑮l件句中用一般過去時(shí)態(tài),主語用情態(tài)動(dòng)詞加動(dòng)詞原形;對(duì)過去,條件句中用過去完成時(shí)態(tài),主語用情態(tài)動(dòng)詞加完成時(shí)態(tài).學(xué)習(xí)時(shí),要牢記構(gòu)成方式.

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