我个人是比较偏用使用这个网址里面 CalifJim 回答的原则判别法 http://www.englishforums.com/English/ApplyToVOrApplyToVIng/gnwvh/post.htm 1) the activity to which something is applied: V-ing, 2) the purpose for which it was done: (in order) to V 记住这两个原则，可能会比较简单一点。 One of the biggest technical challenges to (getting a satellite into orbit) N. V-ing 此时是动名词，也就是将後面当作一个事件名词来看 而用 to + V ，通常指的是"行为的目地性" 个人一点小意见 参考看看 ※ 引述《asdsasd123 (猴子)》之铭言： : 这个问题是很多很多很多小学生以至研究生都会搞不懂的XD : 我就详细的说一下吧 : 老实说我本身也没有很厉害 : 所以有说错的话请大大指证 : 正文 : 如果要在to後面用V+ING的话 : 有三个原则 : 1.to是短语动词的一部分 : 例如look forward to, confess to, commit to : 在後面的V就要加ING : 例句: : I am looking forward to seeing you guys tomorrow. : He is committed to supporting the enermy. : 2.to是形容词+to的形式 : 例句: : I am opposed to attacking America. : She is not accustomed to eating so well. : 3.to是名词+to的形式 : 例句: : My addiction to cigarette is going to kill me chronically. : His dedication to helping the poor is inspiring. : 至於你的句子 : the biggest technical challenges to getting : 这里就是名词+to的形式 : 所以就是用getting瞜 : ※ 引述《eebarry (阿部)》之铭言： : : One of the biggest technical challenges to getting a satellite into orbit - : : or a long-range missile to its target - is "getting the staging right, so : : that the separation and ignition occurs at the right time and in such a way : : that it doesn't change the rocket's trajectory," says Greg Thielmann, a : : senior fellow at the Washington, D.C.-based Arms Control Association. : : 第一行的to getting， : : 为什麽不可以写 to get 呢？ : : 谢谢。 --

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