学会使用介词短语

英语中有很多介词短语都具有动词的特征，适合表达抽象的含义。学会活用这些介词短语不但可以丰富文章的用词，而且能够增强文章的表现力。另外，我们经常可以用介词短语代替从句，从而使语言表达更加简洁有力。

如：原句：His family obviously cannot afford the big sum of money for such an operation obviously.(https://www.daowen.com)

优化：The big sum of money for such an operation is obviously beyond what his family can afford.

原句：Pirated products often cost much less than the original ones，so they enjoy unbeatable advantage in price though their quality is relatively poor.

优化：Pirated products often cost much less than the original ones，so they enjoy unbeatable advantage in price despite their relatively poor quality.