题目内容
3.He watched TV after he finished his homework.(改为同义句)Hedidn'twatch TVuntilhe finished his homework.
分析 他做完作业后才看电视.
解答 答案:didn't until
原句的句意是"他做完作业后才看电视.",同义句中根据设空情况结合原句的句意应该改成"直到做完了作业他才看电视",表示"直到…才…"用not until,此处根据原句是一般过去时,判断应借助于助动词did,故填:didn't until
点评 平时多积累词汇和短语是作答该题的前提,其次要结合句意,根据语法要求,正确作答.
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