在两种情况下紧挨着出现：①强调句型It is/was not until…that…；②倒装句型Not until…。在其他情况一律用not…until…分析句子结构可知，此处为强调句，又因句子使用了一般现在时和过去完成时可知，此处应使用was。故选C。
【点评】考查强调句及时态，掌握not…until…的强调句式和一般过去时。
24．It was the high scores Yang Liwei got on the psychological tests finally won him the status of China's first astronaut.
A. that; that B. that; what C. what; that D. that; which 【答案】 A
【解析】【分析】句意：杨利伟在心理测试中获得的高分最终让他获得了中国第一位宇航员的地位。分析句子可知，本句是强调句型。强调的是the high scores __ Yang Liwei got on the psychological tests，而此部分为定语从句，the high scores后是定语从句，先行词the high scores在定语从句中作got的宾语，因此可用关系词that。强调句型去掉强调部分中的It was/is…that…句意完整。分析句子可知，句子the high scores __ Yang Liwei got on the psychological tests finally won him the status of China's first astronaut去掉强调句型部分，是完整的，故第二个空是强调句型的that。因此选A。
【点评】考查强调句型与定语从句，本题涉及That引导的限制性定语从句。
25．— It was hard work that won Frank the best scores on each test, ? — Yes. When it comes to study, hard work counts.
A. was it B. wasn't it C. did it D. didn't it 【答案】 B
【解析】【分析】句意：—正是努力地学习，使得Frank每次考试都得最高分，不是吗? —是的。说到学习，努力学习很重要。反意疑问句由“陈述句+简略疑问句”两部分组成，疑问部分与陈述部分的动词时态和动词性质应保持一致，而且肯定和否定形式彼此相反。题目含有一个强调句型的反意疑问句，主句是was引导的肯定句，疑问部分则是wasn't，故答案选B。
【点评】考查反义疑问句。
26．— Do you know _________ made him successful in his career? — Yes. His hard work and strong will, of course.
A. what it was that B. what was it that C. it was what that D. was it what that 【答案】 A
【解析】【分析】句意：——你知道是什么使他在事业中成功吗？——知道，当然是他的他的努力和决心。据所给选项分析可知本题考查强调句型it is…that，该句型的特点是去掉it is…that句子的主体部分仍然完整。本题中know后面接的是宾语从句，而宾语从句最重要的一点就是必须是陈述句语序（即满足最基本的主谓结构）。而B、D选项分别是特殊疑问句和一般疑问句，故直接排除；C选项没有将宾语从句的引导词what提前，故排除，故选A。
【点评】考查强调句和宾语从句，掌握强调句型的结构。
27．It was from only a few supplies that she had bought in the village _____ the hostess cooked such a nice dinner.
A. where B. that C. when D. which 【答案】 B
【解析】【分析】句意：正是女主人用她在村庄里购买的一些必需品才烹调出这么美味的晚宴。被强调部分是from only a few supplies,句中的” that she had bought in the village”是定语从句,句子主干为the hostess cooked such a nice dinner。故选B.
【点评】考查强调句型，掌握其结构“It is/was+被强调部分+that+其余部分”。
28．\
A. Please B. Do be C. Are D. Should 【答案】 B
【解析】【分析】句意：父亲说：“对客人一定要有礼貌。”引号中是一个表强调的祈使句，祈使句的强调是在动词前加Do。be polite固定短语，“有礼貌”，故选B。 【点评】考查祈使句，本题涉及祈使句的强调以及固定短语be polite。
29．It was when we were returning home I realized what a good feeling it was to have helped someone in trouble.
A. which B. that C. where D. how 【答案】 B
【解析】【分析】句意：正是在我回家的时候我才意识到帮助别人于危难之时感觉是多么令人愉悦。此句是It was…开头且去掉It was,when we were returning home I realized what a good feeling it was to have helped someone in trouble.是一个完整意义上的句子,故判断此句是一个强调句,强调when we were returning home；强调句常用句型：It is （was） +被强调部分+that（who）…。故选B。
【点评】考查强调句，掌握其结构”It is （was） +被强调部分+that（who）…“。
30．It wasn't until Monday night ______ we were told that Unit 5 would be excluded（排除）. A. since B. when C. that D. before 【答案】 C
【解析】【分析】句意：直到星期一晚上我们才被告诉第5单元被排除。此处是not...until的强调句型，故答案为C。
【点评】考查强调句型。本题涉及not...until的强调句型的应用。
【英语】英语试卷英语强调句题分类汇编含解析
