(1)若主句谓语动词为一般现在时和一般将来时.宾语从句的动词可根据句意用任何时态. Will you tell me how you learned English well?告诉我你怎么学好英语的好么? I think he’ ll be back in an hour.我想一小时后他会回来的. (2)若主句谓语动词为过去时时.从句的动词需用跟过去有关的时态. I thought they were having lessons我想他们正在上课. She said she had done her homework她说她已做完作业. (3)宾语从句表达客观真理.不论主句是什么时态.从句都用一般现在时. The teacher told us light travels faster than sound老师告诉我们光的速度比声音快. 练习:1.-What did you parents think about your decision? -They always let me do I think I should. A. when B. that C. how D. what 查看更多

 

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1)过去分词作状语,其逻辑主语要与主句主语保持一致,两者之间为“被动关系”,从句可转换成“连词+过去分词”形式。连词有while, when, as, though, although, unless, if, once等。

2)过去分词本身就表示被动,作状语时无需使用being done结构;若分词表示的动作明显发生在句子谓语动词之前,可以使用________结构。

3)其否定式在________前加not。

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