When the concrete hardens, those otherwise harmful emissions are sequestered forever, before they even reach our atmosphere.句中otherwise什么用法,如何理解呢?如果去掉,语义有何变化?
1.In fact,people are always the ones who mostly concern about the world peace.2.This is a novel concerned peasant life after reform.如第一句中为什么用concern是错的,而用 are concerned?(关心为什么需要被动?)第二句中我用concerned正确吗?
we will make all the necessary arrangements for the replacement for defective parts介词for后可否用动名词形式?...for replacing the defective parts.或者用不定式来表达we will make all the necessary arrangements to replace the defective parts望老师解答,谢谢!