问题描述：
英语非谓语动词（不定式的问题）
the question was given as below
the invatation will be sent 15days bofore the training to have been held?
这句话中 BOFORE后面的不定式用法正确吗?求解!谢谢大侠
the question was given as below
the invatation will be sent 15days bofore the training to have been held?
这句话中 BOFORE后面的不定式用法正确吗?求解!谢谢大侠
问题解答：
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