Great efforts to increase agricultural production must be made if food shortage
题型:不详难度:来源:
Great efforts to increase agricultural production must be made if food shortage _____ avoided.A.is to be | B.can be | C.has been | D.will be |
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答案
A |
解析
试题分析:考察将来时表达法。本句中的条件句中使用be to do sth表示将来时,表示的强制要求做某事。句意:如果食物短缺要被避免,我们就要做出巨大的努力来增加农业的产量。故A正确。 点评:在英语中将来时有多种表达法。Be to do sth表示计划的事情;或者表示注定要做某事;也可以表示命令做某事,相当于have to, must,should; will表示一般的将来,或者临时决定做某事;be going to do sth表示按照计划安排要做某事;或者根据某种迹象要做某事;be about to do sth即将做某事,不与表示将来时的时间状语连用。现在进行时表示一般将来时,表示按照计划安排要发生的事情,且动词要是一些表示位置变化的动词。 |
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