be diffferent from与different from的区别（详细例子句子中）When people use words and expressions different from the "standard language".为什么不用“be different from”?different应该怎么用?has different from?还有什么时候要加be,什么时候不用加be?2.This book is written for readers familiar with the German language.Q:为什么不用“sb be familiar with sth”?什么时候不用加be,怎么用?3.Q：what to do with后面要加it 以上问题如果可以具体举例那就最好了.

When people use words and expressions (different from the "standard language)
上面那句话后面应该还有内容。
就你写出的部分来看，括号内的部分是作为定语修饰words and expressions 的，它不是一个完整的句子，相当于短语作定语。如果要用be different from,可以写做这样：When people use words and expressions （that is different from the "standard language"）. 这里括号内仍然修饰words and expressions 的，但它是个完整的句子（定语从句）
第二个问题和第一个问题类似。
3. what to do with .
how to do with it .
what..... 后面不用接宾语it 了

问题一和问题2都是差不多的
When people use words and expressions（which are)different from the "standard language",.
This book,(which is) familiar with the German language,is written for readers.
has different from是错的
因为different是形容词,应改为has difference from
3.要加it.