因?yàn)橐纼?nèi)容分析,此句型是屬於下列的型態(tài)4,『現(xiàn)在或未來可能發(fā)生的狀況』,所以要選B.
1.與現(xiàn)在事實(shí)相反
If+S+過去式動(dòng)詞,S+would(could ,should,might)+原型動(dòng)詞
例如:If I were rich,I would help you.
因?yàn)楝F(xiàn)在我不有錢,所以是與現(xiàn)在事實(shí)相反的用法
2.與過去事實(shí)相反
If+S+過去完成式,S+would(could ,should,might)+have+p.p
例如:If he had told me the truth,I would not have made the mistake.
因?yàn)橐呀?jīng)是過去的事了,所以假設(shè)句一律用完成式
3.與未來事實(shí)相反
表示對(duì)未來事情的假設(shè),實(shí)際上絕不可能發(fā)生.
If+S+were to +V,S+would(could,should,might)+原型動(dòng)詞
例如:If we were to live to be 200 years old,we could change everything.
4.現(xiàn)在或未來可能發(fā)生的狀況
If+S+現(xiàn)在式動(dòng)詞,S+ 祈使句 或 will(can,may,shall )+原型動(dòng)詞
例如:If it rains tomorrow,I shall not go.請(qǐng)問第4種可以算是虛擬語氣嗎？是的，現(xiàn)在或未來『可能』發(fā)生的狀況→是是虛擬語氣。那和主將從現(xiàn)有關(guān)系嗎？如果像樓上所說的是主將從現(xiàn)，那后面是不是應(yīng)該填i didn't read？