"dreadfully, so as to cause terror, in a horrible manner," mid-15c., from terrible + -ly (2). In the sense of "extremely" it is first recorded 1833; in the sense of "extremely badly" it dates from 1930.
权威例句
1. Poor Dr Pegler got terribly behindhand with his appointments.
可怜的佩格勒博士大大落后于当初的约定。
2. I think he misses her terribly. You might cheer him up.
我估计他是太想念她了。也许你可以让他打起点儿精神来。
3. Even clever people are not terribly clever when put on the spot.
即便是聪明人在面对难题时也未必就能表现得特别聪明。
4. The chances of a planet surviving a supernova always looked terribly slim.
行星躲过超新星爆发的几率总是十分渺茫。
5. My son has suffered terribly. He has lost his best friend.