题目内容
15．Once _________，this dictionary will be very popular．（ ）| A． | printed | B． | printing | C． | to print | D． | is printed |
分析 一旦出版，这本词典将会非常畅销!
解答 答案是A．本题考查"连词+分词"的结构．"连词+分词"的结构在句中往往做状语，属于分词做状语；分词做状语时分词的选择是看分词和句子主语之间的关系：分词和句子主语之间是主谓关系（主动关系），用现在分词；分词和句子主语之间是动宾关系（被动关系），用过去分词；本题中连词once后的print和句子主语the dictionary之间是被动关系，所以答案选择A．注意：1）"连词+分词"的结构中分词前不能有任何形式的be动词；2）注意区别，"疑问词+to do"在句中起着名词作用，做主语、宾语或表语，而"连词+分词"在句中充当状语．
点评 首先判断选项中的动词在句中是以谓语还是非谓语形式出现，然后根据选项在句中的功能结合非谓语的基本用法做出合理的判断．要关注常见非谓语动词的搭配．
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| 23．A．measuring | B．taken | C．measured | D．measure |
| 24．A．are asleep | B．fall asleep | C．go to sleep | D．go to bed |
| 25．A．While | B．During | C．As | D．If |
| 26．A．must | B．can | C．need | D．might |
| 27．A．surely | B．usually | C．perhaps | D．hardly |
| 28．A considered | B．think | C．thought | D．believe |
| 29．A．rich | B．poor | C．good | D．bad |
| 30．A．how | B．why | C．what | D．that |
| 31．A．much too | B．many too | C．too many | D．too much |
| 32．A．exercises | B．food | C．work | D．exercise |
| 33．A．put on | B．gain on | C．get on | D．put up |
| 34．A．type | B．form | C．kind | D．sort |
| 35．A．sweets | B．sweet | C．candy bar | D．sweet thing |
| 36．A．But | B．Or | C．And | D．So |
| 37．A．at | B．for | C．with | D．by |
| 38．A．asks | B advises | C tells | D．calls |
| 39．A．low | B．high | C．much | D．little |
| 40 A．balanced | B balance | C．good | D．better |
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