题目内容

15．我怀疑那个活动是否值得参加．
I doubt whether the activity is worth taking part in．

分析 这是一个主从复合句，主句"我怀疑"，连接词"是否"，从句"那个活动值得参加"，其中"值得做"对应短语"be worth doing"

解答 根据分析，答案为：I doubt whether the activity is worth taking part in．

点评 本题考查doubt的用法．在否定句和疑问句中，doubt后面接that引导的宾语从句．在肯定句中，doubt后面一般接whether或if引导的宾语从句．

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