单项填空题解题技巧十法详解五：还原法

还原法
 

　　在解答那些题干为感叹句，倒装句，强调句等打乱了正常语序的单项选择题时，考生可以将其还原为正常语序后的简单句，陈述句再作选择的方法。这类题题干复杂，多元化，容易干扰考生的思路。因此做这类题时，采用还原法打破考生的定向思维，突破考点，培养学生的创造性思维，逆向思维，以便考生在解题过程中，保持清醒的头脑，挖掘出题目的核心，考点，快速找到正确答案。

　　13. What a lovely day _____?

　　A. is it B. isn't it C. is he D. isn't he

　　对于反意疑问句的构成，考生再熟悉不过了。但对于这种特殊的反意疑问句，考生可能就无从下手了，甚至连正确答案给出来了也看不明白。如果我们采用还原法，将题干What a lovely day!这个感叹句还原成陈述句：It's a lovely day. 这样，再将此句变成反意疑问句，考生便会恍然大悟，从而得出答案B.

　　14. Whom would you rather have _____ with you?

　　A. to go B. go C. gone D. going

　　考生由于受语法规则的影响，have后应接to go或gone 这样容易误选A或C. 如果我们将此题改为陈述句，即为：You would rather have whom _____ with you. 这样我们一眼就可以看出答案为B. 本题的考点是使役动词have的宾语补足语用动词原形表示将来。

　　15. It was _____ computer games that cost the boy a lot of time he ought to have spent on his lessons.

　　A. to have played B. playing C. played D. having played

　　此题题干我们判断是否为强调句，采用还原法，即去掉题干中的it is (was) …that (who) …如果句子仍然成立，能够表达完整的意思，则是强调句；否则，则不是强调句型。去掉it was … that后，变为_____computer games cost the boy a lot of time he ought to have spent on his lessons.很容易看出本题应为-ing形式短语作主语，但不必用完成式。正确答案为B.