（4）将事物的正反、好坏两方面，或者将两种不同事物进行比较，对比时常用的句式、短语：
然而 while ，whereas，but，however，nevertheless
尽管如此 in spite of that，despite all this
但在另一方面 but on the other hand
与。。。相比 in/by in comparison with。。。/as compare with。。。 对比之下 by/in contrast
与。。。相反 as opposed to。。。/instead of。。。
相反 on the contrary，instead
他们的区别如下 The differences are as follows；the differences can be described as follows
A与B之间的不同在于。。。。the differences between A and B is /lies in/exists in/consists in。。。；A is different from B in。。。