as没有然而的意思。
adv. 如同，像……一样
prep. 作为以……身份当作像，如同当……时
conj. 因为，由于在......时，随着以……的方式，像正如虽然，尽管I meant it as a joke.
这话我只是当作玩笑讲的。
Ebola is not as easily spread as viruses such as smallpox.
埃博拉病毒不像天花这类病毒那样容易传播。
You're as tall as your father.
你和你父亲一样高。
It's not as hard as I thought.
这没有我想象的那么困难。
Her skin was as smooth as silk.
她的皮肤像丝绸一样光滑。
He's nearly as tall as you are.
他差不多和你一样高了。
