Of + 名词 ＝ 形容词 比如 of great importance = very important 所以这句话把of great significance 改成 very significant 就行了 不能改成that,that必须引导 从句,也就是完整的句子 正确的改法. Be of significance for 更多些。 例句：it will be of great significance for health and the environment in europe. 在英语表达中，“be of 和 significance 之间需要加形容词”这一说法是正确的。例如，当我们要表达某事对某人具有重要意义时，可以说“具有great significance”，即“be of great.
PPT “Into the Wilderness” The Exploration & Settlement of the Ohio
The work is of real significance to be accomplished on time (该工作按时完成具有现实的重要意义) = the work is really significance to be accomplished on time.
Importance→be important, be of significance→be significant等。 它们之间可以相互转 换， 因此，以上各例句可转换为： 1、they are very helpful to learners of english.
