在考研英语中，使用成语可以丰富文章表达，提升语言的表现力。以下是一些常用的考研英语成语及其含义：

巧妇难为无米之炊- If you have no hand you can't make a fist. One can't make bricks without straw.

千里之行始于足下- a thousand-li journey begins with the first step.

没有付出，就没有收获- no pain, no gain.

有志者，事竟成- where there is a will, there is a way.

没有人是孤岛- no man is an island.

爱屋及乌- Love me, love my dog.

百闻不如一见- Seeing is believing.

比上不足比下有余- worse off than some, better off than many； to fall short of the best, but be better than the worst.

笨鸟先飞- The early bird catches the worm.

谦虚使人进步，骄傲使人落后- Modesty helps one go forward, whereas conceit makes one lag behind.

跑得了和尚，跑不了庙- Even if the monk can run away, his temple cannot run with him.

打死我也不说- Even if I were to be beaten to death, I will not tell.

这些成语在考研英语作文中可以增添文采，使文章更具说服力。建议考生在复习过程中不仅记住成语的中文含义，还要熟悉其英文表达和用法，以便在写作时能够自然、准确地运用。