important加什么单词等于importance

请问：be of importance 与be important有什么不同? Knowledge is of great_______(importance/important) 填什么? attache great important to 后面跟什么,还有是important还是importance 末尾为t,去t加ce的名词,如important变为importance有哪几个 important与importance的区别 请看这句是important 还是importance? of vital importance和important哪个正式 the important of 还是 the importance of bag的前面加什么等于一个新单词 Many people attach great importance(还是important)to music. the important of与the importance of有没有不同 be of significant importance=be significantly important怎么理解