【正文】
,因之,主句用would、should、could+動(dòng)詞原型,從句用一般過去時(shí)。 答案:A 誤區(qū)提醒 在學(xué)習(xí)虛擬語(yǔ)氣的時(shí)候,要對(duì)過去、 現(xiàn)在、 將來(lái)的虛擬的做出正確的判斷。 一定要記住,虛擬語(yǔ)氣的條件從句的謂語(yǔ)用過去式,動(dòng)詞be要用were。 典型例題:I ________ him the answer ________ possible, but I was so busy then. A. could tell, if it had been B. must have told, were it C. should have told, had it been D. should have told, should it be 解析:先分開看此題,由于設(shè)空處在主句,所以先看主句,因?yàn)橛芍骶淇床怀鲱}目所表達(dá)的具體時(shí)間,所以再看從句,此從句是由but引導(dǎo)的轉(zhuǎn)折句,所表達(dá)的時(shí)態(tài)是一般過去時(shí),意為“我那時(shí)很忙”,所以,主句發(fā)生的事情是與過去事情相反的事情,因之,主句用could、should、would+動(dòng)詞原形,從句用過去完成時(shí)。 答案:C 4