意思不同、用法不同。compete with是和...競爭，后加競爭對象。compete against是反對某人，與...抗爭，與...競爭，后加對抗對象。

compete的用法

compete的基本意思是“力圖取勝”,指在比賽、辯論等有競爭活動中為征服或取勝而進行的努力,常暗示有獎賞刺激物。

compete是不及物動詞,接against表示“與…對抗”,接for表示“奪取…”,接with表示“對…抗爭”。

compete的短語

compete against(v.+prep.)

與…抗爭 struggle against sb or sth with hope of success

The firm is too small to compete against large international companies.這個公司太小,不能與大跨國公司競爭。

compete for (v.+prep.)

比賽…奪取 try to win sth in competition with sb else

Firms from across the country may compete for the contract.全國各地的公司都可能為承攬這項合同而競爭。

compete with (v.+prep.)

與…抗爭 struggle against sb or sth with hope of success

〔說明〕 compete with常不用于進行體。

We try to make the trains run on time, but we can't compete with weather.我們努力使火車準點運行,但我們抗爭不過天氣。