Books are made of paper and paper is made from wood.书是纸制成的,而纸是用木材制成的 为什么纸是用木材制成的要用made form 而不用made of 难道我们无法知道纸是木材做的吗

问题描述:

Books are made of paper and paper is made from wood.书是纸制成的,而纸是用木材制成的 为什么纸是用木材制成的要用made form 而不用made of 难道我们无法知道纸是木材做的吗

书是纸制成的可以用眼睛看出来 而纸是木材制成的用眼睛看不出来所以用made from