来自刘子懿的问题
Collectingstampsismyhobby此句为何要用Collecting为什么是ismy
Collectingstampsismyhobby此句为何要用Collecting为什么是ismy
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Collectingstampsismyhobby此句为何要用Collecting为什么是ismy
Collectingstampsismyhobby此句为何要用Collecting为什么是ismy
Collectingstamps集邮collecting是动名词原型是collect(动词),Collectingstamps是句子的主语is谓语,集邮是我的爱好