place great emphasis on 后面接doing还是to do呢？

“place great emphasis on” 后面通常接动名词（-ing形式），而不是不定式（to + 动词原形）。所以正确的用法是 “place great emphasis on doing”。例如：
1.The company places great emphasis on promoting a healthy work-life balance.
2.Our school places great emphasis on encouraging students to pursue extracurricular activities.

根据后面有on，所以应该是doing。

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