下面这段英文,有哪些语法和词汇等方面的问题,Diamondisatypeofgem,popularandvaluable.Itissaidthatifyouget1CTdiamond,atleast250tonsgravelhavebeenminded.Diamondsexistonlydeepinsidetheformation.Theformation

Question

下面这段英文,有哪些语法和词汇等方面的问题,
Diamond is a type of gem,popular and valuable.It is said that if you get 1 CT diamond,at least 250 tons gravel have been minded.Diamonds exist only deep inside the formation.The formation was formed by the blast of volcano.

Answer 1

从语法上来看,tons 后面要加上of;
用词不妥的有：gravel,formation.
另外,同一个句子里尽量不要使用同一词根的词,如：form,formation