题目内容
3．I spent thirty minutes cleaning my bedroom yesterday．（保持原句意思）Ittook me thirty minutes toclean my bedroom yesterday．
分析 --我昨天花费三十分钟打扫我的卧室．
--昨天我花了三十分钟打扫我的卧室．
解答 答案：took；clean．考查同义句．spend+时间+doing sth花费时间做某事，可以表达为：it take+时间+to do sth花费时间做某事．根据yesterday可知是一般过去时态，因此take要变为过去式took．不定式to后用动词原形clean．答案是took；clean．
点评 同义句转换最基本的是要保持原意不变，在理解语境的基础上，抓住关键单词或词组，运用相同词意的单词或词组完成试题．
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