✨让你的英文不再错(P 25 - 26)

expectation n. (一般用复数)期望

The four-star hotel did not live up to her expectation.(✖)

The four-star hotel did not live up to her expectations.(✔)

(这家四星级饭店并不符合他的期望。)

✎ come up to / live up to / meet sb's expectations(用复数)，表"符合某人的期望"。

expense n. 花费

I'll publish the book at my (own) expenses. (✖)

I'll publish the book at my (own) expense. (✔)

(我要自掏腰包来出版这本书。)

✎ at sb's expense(用单数)，可表: ⑴ 自费 ⑵ 让某人难堪。