通常两个以上不定式并列时,后者的to常省掉;但是如果表示对比或对照关系，所需表达的内容需要强调时,后者的to不可以省掉。你这句话中的to可以省。下面这句例句中to不能省。The Chinese government's heavy invest on 2008 Beijing Olympic Games is not only to enable the whole world to see that China is completely competent to hold the world biggest event, but also to show their strong position in the world.
