题目内容
1．It took Larry half an hour to write a letter for his mother yesterday．（句型转换）Larryspent half an hour writing a letter for his mother yesterday．
分析 昨天Larry花了半个小时给他妈妈写了一封信．
解答 答案：spent half an hour writing a letter for his mother yesterday．
分析句子结构可知，本句考查短语spend time （in）doing sth花费时间做某事；根据上一句时态为过去时可知，本句的时态也用一般过去时．故答案为spent half an hour writing a letter for his mother yesterday．
点评 对于句型转换的题目要分析原句的句型结构，并找出同义句型或者相同意思的表达方式，或者使用非谓语动词的形式，或者从句的形式以及一些特殊句式等，要根据句式结构特点进行灵活选择
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