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    在介词后一般用动名词作宾语.但在少数介词.如but, except后用动词不定式作宾语.但要注意“to 的省略.如but前有“do 则省去“to . 例如:I have done nothing but help him with his luggage. I have no choice but to wait for him at the bus stop. 【查看更多】

     

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