20．The Chinese people are kind and caring．If not，I _____ in China in the past 30years．（　　）
A．didn't stayB．hadn't stayed
C．couldn't stayD．couldn't have stayed

分析 中國(guó)人民善良有愛(ài)心．如果不是這樣，在過(guò)去的30年我不可能呆在中國(guó)．

解答 答案是D．本題考查虛擬語(yǔ)氣；題干中If not完整的表達(dá)是"If the Chinese people were not kind and caring"，是與現(xiàn)在事實(shí)相反的虛擬條件，主句中的"in the past 30 years"說(shuō)明的是與過(guò)去事實(shí)相反的結(jié)果；與過(guò)去事實(shí)相反的結(jié)果主句中動(dòng)詞用"would/should/could/might+have done"，故選D．

點(diǎn)評(píng) 在掌握虛擬語(yǔ)氣的規(guī)則的基礎(chǔ)上，判斷題干屬于什么類型的虛擬，然后根據(jù)語(yǔ)境，選用恰當(dāng)?shù)膭?dòng)詞形式表達(dá)虛擬．

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