3．If only he _____ quietly as the doctor instructed，he would not suffer so much now．（　�。�
A．would lieB．layC．had lainD．should lie

分析 要是他按照醫(yī)生的指示靜靜地躺在床上，現(xiàn)在他就不會那么痛苦了．

解答 答案：C
首先，根據(jù)從句中的if only"只要，要是"后面引導的句子大多要用虛擬語氣；其次，由于從句中"as the doctor instructed"使用了一般過去時，因此可知空缺處要用虛擬語氣，表示與過去事實相反的情況，要用過去完成時；故選C．

點評 本題考查的是錯綜時間虛擬條件句．做此類題時首先要根據(jù)句意及句子所使用的時態(tài)或表達形式，確定本句為錯綜時間虛擬條件句；其次要了解在錯綜時間虛擬條件句中，由于主句與從句所指的時間不一致，所以它們所使用的時態(tài)就各不相同；如從句指對過去的虛擬，需要用過去完成時；而主句指對現(xiàn)在或?qū)淼奶摂M，則可以使用would/should/could/might+動詞原形；有時還應根據(jù)具體的語境情況對時態(tài)作相應的調(diào)整．

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