第15课

fall behind [,fɔ:l 'bihaind]

fail to keep up, lag behind

fall out [,fɔ:l 'aut]

get on bad terms, quarrel;happen,occur

as far as

to the distance, point or degree that

by far

(和形容词最高级连用)最最

far from

远离，决不，完全不

make one's farewells

告别

find fault with

挑剔，找(…的)岔子，批评

be at fault

有错，不知所措

for fear of

for fear that惟恐，以免

feel like doing

觉得想做…

a few

(表示肯定)少数，几个

a good few

相当多，不少

quite a few

还不少，有相当数目的

the few

少数

fill in

填满；填写；(for)替代

fill out

填好，填写；使长大

fill up ['filʌp]

填补；装满

find out [,faind 'aut]

v.找出；发现；查明

catch fire

着火(动作)

take fire

着火，开始燃烧