197. fatal to致命的
198. favorable to支持,赞成
199. fearful of惧怕
200. feel at home熟悉
201. feel blue心情不好
202. feel free to随便
203. figure out sth. 解决
204. fit for适于
205. flat tire轮胎没气
206. flat tire轮胎没气
207. fond of喜欢
208. for ever 永远
209. for good 永久地
210. for the better 好转
211. for the moment 暂时,目前
212. for the present 暂时,目前
213. for the sake of 为了,为了...的利益214. for the time being 暂时,眼下
215. foreign to非...所原有
216. free of /from未受...;免费
217. free with康慨,大方
218. from time to time 有时,不时