题目内容

20．I have sent her the invitation butwhethershe will accept it I don't know．

分析 我已经给她发了请柬，但是我不知道她是否会接受．

解答 答案是whether．本题考查引导宾语从句是引导词；题干中but连接的并列分句中___ she will accept it充当know的宾语，根据句意，我不知道她"whether是否"接受，故答案是whether．注意，if可以引导宾语从句，表示"是否"，但通常不放在句首．

点评 单词填空必须在对语境和句子结构整体理解的基础上抓住指向答案的关键线索、固定句型或搭配等，同时注意所选词的形式变化．本题考查whether 引导的宾语从句．

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