题目内容
5.当我们在火灾中,应该保持冷静.We shouldkeep calm when we are in a fire.
分析 keep calm.
解答 答案.keep calm.
句中should是情态动词,后加动词原形,表示保持冷静用keep clam,系表结构,故答案是keep calm.
点评 when引导时间状语从句时,表示"当…的时候",从句的谓语动词可以是延续性的,也可以是非延续性的.它引导的时间状语从句通常用一般现在时表示一般将来时;用一般过去时表示过去将来时;用现在完成时表示将来完成时.
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