expensive如何加前綴

另一種expensive意思是昂貴的。他的前綴是在前邊加i構成inexpensive意思是不貴的，便宜的。它的名詞是expense，意思是費用，開支。例如

This is such an expensive book that I can't afford to buy it.

這是如此昂貴的一本書，以至於我買不起。

I can afford to buy the expensive Mobile phone to Get in touch with my family and friends.