1、fast的比较级是:faster。fast,。adj. 快的;迅速的;紧的;牢固的;放荡的。adv. 快速地;紧紧地;放荡地;深深地。n. 斋戒;禁食;系泊用具。
2、He ran fast enough to catch the thief.他跑得飞快,足以抓住那小偷。
3、The priest had only water and bread during his three week fast.牧师在三个星期的斋戒期间只进食水和面包。
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