By the third generation, the original language is lost in the majority of immigrant families. Hence the description of American as a “graveyard” for language.请问老师,hence的用法是什么?为什么可以引导一个没有谓语的简单句?
Government cannot inject a single dollar into the economy if it has first taken that same dollar out of economy.改错。请问老师,下面这个解析是不是有错误,1.inject...应该发生在take...之后?2.是否可以把if改成unless?