Question

If penicillin had not been available, many people _____ from sickness or even small wounds.

A．would die	B．would have died
C．will have died	D．might die

Answer 1

B

試題分析：考查虛擬語氣：if條件句用had done表示和過去的事實(shí)相反，主句用would have done表示虛擬，句意：如果沒有青霉素，很多人就會(huì)死于疾病或小的傷口。選B。
點(diǎn)評(píng)：虛擬語氣在條件句中的用法是：虛擬條件句 與現(xiàn)在事實(shí)相反的假設(shè)，從句是If+主語+動(dòng)詞的過去式（動(dòng)詞be用were)，主句是：主語+should,would, might,could＋動(dòng)詞原形；與過去相反的假設(shè)從句用：If+主語+had +過去分詞，主句是：主語＋should, would, might, could ＋have done；與將來相反的假設(shè)，從句用1、If+主語+動(dòng)詞過去式，主語＋should, would  do，2、If+主語+were to+ 動(dòng)詞原形，加主句3、If+主語+should +動(dòng)詞原形 ，加上主句的might, could＋動(dòng)詞 原形