问题描述：
指出下列各句中动词不定式充当的句子成分1、could you please give me something to eat
2、my dream is to be a teacher
3、i got up early to catch the train
4、i think we need to plant more trees
5、it's dangerous to swim in the river
2、my dream is to be a teacher
3、i got up early to catch the train
4、i think we need to plant more trees
5、it's dangerous to swim in the river
问题解答：
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