單選題Hesaidhewouldhelpmewithmymathsi

時(shí)間: 2015-5-19 分類: 作業(yè)習(xí)題【來(lái)自ip: 14.188.159.12 的熱心網(wǎng)友咨詢】手機(jī)版

問(wèn)題補(bǔ)充：單選題 He said he would help me with my maths if he ________ free．A.wasB.will beC.would beD.is

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A解析根據(jù)if前面的時(shí)態(tài)可知后面的條件從句的時(shí)態(tài)也應(yīng)該用過(guò)去的時(shí)態(tài)。如果主句的時(shí)態(tài)是過(guò)去將來(lái)時(shí)態(tài)，那么從句要用一般過(guò)去時(shí)態(tài)代替一般將來(lái)時(shí)態(tài)，故選A項(xiàng)。

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