fall down fall into fall off 的意思用法 还有别的关于fall的词组吗 有分

fall in 到期；集合；排队；倒塌；与某人在一起
fall in love 坠入爱河；爱上某人
fall into 落入；分成
fall in love with 爱上
fall of 坠落
fall down 跌倒；失败；倒塌
in the fall 在秋天
rise and fall 涨落；抑扬
fall off 减少；跌落；下降；离开；衰退
fall on 落到；指向
fall from 从…落下
fall behind 拖欠；落在后面
free fall *下落
fall back 退却,后退；[计]回落
fall ill 生病
fall for something 相信某事
fall for 迷恋；信以为真
fall back on 退到；求助于；回头再说
fall out 发生；脱落；争吵；离队；结果是
fall under 受到（影响等）；被归入
fall down
1.掉下,落下,跌倒：
The old lady fell down in the street and broke her leg.
老妇跌倒在大街上,摔坏了腿.
2.拜倒,跪倒：
They fell down before him.
他们拜倒在他面前.
3.倒塌：
The old house soon fell down.
这座老房很快就倒塌了.
4.毫无结果,(在…方面)失败(常与on,in连用)；被表明为不正确、不足或不妥；证明是不令人满意的(或不切合实际)：
Your plan fell down when it proved too costly.
你的计划是不切合实际的,因为它被证实耗资太大.
5.漂流而下
fall off
1.减少,缩小；变轻；降低,减退：
Orders have been falling off lately;we must advertise more.
近来订货减少,我们必须加大广告力度.
Interest in the game has fallen off.
人们对这项运动的兴趣已经降低.
2.(质量)下降,变坏；变瘦,(健康、精力等的)衰退：
The quality of these goods has fallen off since last year.
去年以来,这些货物的质量开始下降.
3.【航海学】(船)偏离航线,改变航向,背着风,转向下风处：
The leading boat fell off when the wind grew too strong.
风吹得太猛时,领头的船转向了下风.
4.从…落下,(从…)跌落(或下降)；落下；跌落：
When you are learning to ride a bicycle,you often fall off.
在你学骑自行车时,你常常会从车上摔下来.
5.离开,(朋友等)渐渐疏远；脱离,退出；背弃,背叛：
Some of their most loyal members have now fallen off.
他们一些最忠诚的会员现已经退出了.
His friends fell off one by one when he was in adversity.
在他身处逆境时,他的朋友一个接一个离他而去.
6.(逐渐)消失,消亡,死亡,废弃：
That custom has fallen off.
那个风俗已经废弃了.
7.(动物)失去对…的食欲：
His horse is falling off its hey.
他那匹马对干草没有胃口.
8.【军事】(飞机)侧降