紧急!看一下这两句话有语法错误么,紧急,

问题描述:

紧急!看一下这两句话有语法错误么,紧急,
From the above,not only some Polite Language is known,but also the reason of the differences between China and western is understood.这句话有语法错误么?
It is essential for keep these differences in mind and pay attention to them when communicating in foreigners.这句话也是有语法错误么?
真的很紧急拜托了

第一句:
当not only放在句首,连接一个句子时,该句应使用倒装语序;而but also后面的句子仍用陈述语序.所以,这句话应该改为-From the above,not only is some Polite Language known,but also the reason of the differences between China and western is understood.
第二句:
essential的其中一个用法是:it is essential(for sb)to do sth,所以应该为-It is essential to keep these differences in mind and pay attention to them when communicating in foreigners.