1宾语从句一、定义在句子中起宾语作用的从句叫做宾语从句。二、连接词that: I think that you can pass the exam.Whether/if: I dont know what the word means.“Wh”: I dont know what the word means.I dont know where he found the book.只用whether的情况：1. 与or not连用：I dont know whether its raining or not.2. 与动词不定式连用：He doesnt know whether to accept the invitation.3. 连接词前有介词时：It depends on whether he is coming.三、时态1. 主句是一般现在时态，从句根据实际情况而定(各种时态均可)She wants to know what he has done for the exam.2.主
