they haven't decided to when they will start. 这句话是一个宾语从句,有错吗,

they haven't decided to when they will start. 这句话是一个宾语从句,有错吗,
they haven't decided to when they will start. 这句话是一个宾语从句,有错吗,

they haven't decided to when they will start. 这句话是一个宾语从句,有错吗,
decide to do sth 是词组 简单句..这里你不需要to 这里decide引导的是宾语从句 复合句 知道么 不懂可以问~

to去掉，或改成They haven't decided when to start.

有，应该是They haven't decided when they will start.为什么要把to去掉呢，不是decide to do sth 吗因为后面接一个句子作它的宾语，而不是动词不定式作宾语那么，什么叫介宾呢，不是动词+介词+宾语从句吗decide 是及物动词，后可直接接宾语，不必用介词那也可以说 decide do sth吗？？...

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有，应该是They haven't decided when they will start.

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