________ the prices and functions of different types of computers before you mak
题型：不详难度：来源：
________ the prices and functions of different types of computers before you make up your mind which to buy. | A．To compare | B．Comparing | C．Compared | D．Compare |
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答案
| D |
解析
试题分析：考查祈使句。句意:在你下定决心要买某台电脑之前，你要比较一下不同的电脑的价格和功能。祈使句表示的一种语气，使用时，要把动词原形放在句首。故D正确。
点评：祈使句表示的是一种语气，使用的时候常常把动词原形放在句首。还经常构成：祈使句+连词+陈述句=If引导的条件句+主句。这个句型进一步转换成：名词短语+连词+陈述句。如果原句中的连词是and,那么可以转换成一个肯定的条件句；如果原句中的连词是or，可以转换成一个否定的祈使句。 |
举一反三
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