But for water，it ______ possible to live in the desert．A．is B．wasC．wereD．wo
题型：不详难度：来源：
But for water，it ______ possible to live in the desert．| A．is | B．was | C．were | D．wouldn"t be |
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答案
| D |
解析
试题分析：考查含蓄虚拟条件句：用without(＝but for),otherwise代替if从句。这里的but for water="if" it were not for water要是没有水，主句是would do，句意：要是没有水，在沙漠里生活是不可能的。选D。
点评：有时，句子没有直接给出假设情况的条件，而须通过上下文或其他方式来判断。这题用了Otherwise代替if的虚拟语气，主句是1、表示与现 在事实相反的情况，主语+should/would/could/might+do： 2、表示与过去事实相反的情况，主句：主语+should/would/could/might+have done 3、表示对将来情况的主观推测，主句：主语+should/would/could/might+do |
举一反三
It is often recommended that children _______ chances to get close to nature.| A．must be offered | B．should offer | C．be offered | D．are offered |
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It is requested that each of the teachers invited ______ a performance at the party. | A．give | B．will give | C．has to give | D．must give |
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They insisted that he _____ present at the ceremony the next week.| A．be | B．has been | C．should have been | D．was |
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—The wind is always blowing here．
—How I wish it ______ today| A．won"t blow | B．didn"t blow | C．doesn"t blow | D．isn"t blowing |
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Look at the trouble I am in! If only I ______ your advice.| A．followed | B．would follow | C．had followed | D．should follow |
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