在考研英语作文中，可以使用以下替换词来丰富文章的表现力和表达的多样性：
基本词汇替换
people → individuals, characters, folks
good → positive, favorable, rosy, promising, perfect, pleasurable, excellent, outstanding, superior
bad → dreadful, unfavorable, poor, adverse, ill
高级词汇替换
think → deem, reckon, consider, argue, harbor the idea that, take the attitude that, hold the view that, it’s my view that
many → a considerable number of, mountainous, an army of, an ocean of, a multitude of, a host of
good → beneficial, favorable, positive, excellent, fantastic, splendid, rosy, promising
bad → dreadful, unfavorable, adverse, detrimental
同义词替换
very → highly, deeply, heavily
important → significant, crucial, essential
problem → issue, difficulty, challenge
result → outcome, consequence, result in
被动语态替换
we should pay attention to → Attention should be paid to
come into being → come to be, come into existence, come to birth
短语替换
in my opinion → in my view, for my part, from my own perspective
increasing（ly） → more and more
from bad to worse → increasingly worse
这些替换词和短语可以帮助你在作文中表达更丰富、更准确、更高级的意思，从而提高作文的整体质量和得分。建议你在写作时根据具体的语境和需要，选择合适的替换词进行表达。